Create Your First AI Image: A Beginner's Guide

What an Image Generator Is Doing

AI image generators use deep learning models to translate natural language text prompts into visual pixels. When you type a description, the model does not simply copy and paste existing photos from the internet. Instead, it relies on patterns, textures, and concepts it learned during training to construct an entirely new image from scratch. Modern models can also perform "image-to-image" transformations, where they take an existing reference photo and modify it based on your text instructions, or "magic fill" to fill masked regions of an image with AI-generated content [Microsoft Learn]. If you are new to these concepts, you might want to read our What Is Generative AI? guide first.

Free Tools That Work Today

You do not need expensive software to start creating. Several major platforms offer free access to state-of-the-art image generation models:

• ChatGPT (OpenAI): Powered by the ChatGPT Images 2.5 model, this tool is available to all ChatGPT, ChatGPT Work, and Codex users across desktop, mobile, and web [OpenAI]. It features "Sketch" (which turns rough drawings into complete images) and multi-turn editing [OpenAI].
• Gemini Apps (Google): Powered by the Nano Banana 2 model, Gemini allows users to generate and edit images [Gemini Apps Help]. Free users can download images at 1K resolution, while paid Google AI plan subscribers can download at 2K resolution and access the advanced "Nano Banana Pro" model [Gemini Apps Help].
• Windows App SDK (Microsoft): For developers and users on Copilot+ PCs with an NPU, Microsoft provides on-device, Stable Diffusion-powered APIs that run locally without relying on cloud servers [Microsoft Learn].

The 15-Minute Lesson: How to Prompt

Writing a prompt is like directing an artist. If you are too vague, the AI has to guess what you want. To get the best results, structure your prompt with three key elements:

1. The Subject: What is the main focus of the image? (e.g., a dog, a futuristic car, a robot).
2. The Setting & Action: Where is the subject, and what are they doing? (e.g., riding a surfboard, driving through a mountain road, reading in a library).
3. The Style & Medium: What should the image look like? (e.g., splashy watercolor, children's book drawing, realistic photo with natural lighting).

The Prompt Table

Use these structured examples to see how changing style and subject parameters alters the final output:

Try This Now

Let's walk through a small exercise to generate and edit your first image using ChatGPT or Gemini. This is a simple action you can easily undo or try again. Start with a prompt you already know how to describe, which makes it easier to spot what the tool gets right:

1. Generate the base image: Open your chosen tool and type: "Create an image of a dog riding a surfboard" [Gemini Apps Help]
2. Refine with local edits: If you want to change a specific detail (like the color of the surfboard), use the editing tool. In ChatGPT, you can place a comment directly on the image or use the "Sketch" tool to draw a guide [OpenAI]. In Gemini, click "Chat" under the generated image and type your edit request [Gemini Apps Help].
3. Save your work: Download the final image to your device.

What You Are Allowed to Do with It

Before you publish or use your AI-generated images, you must understand the legal and platform rules:

• Copyrightability: According to the U.S. Copyright Office, material generated wholly by AI is not copyrightable under existing law, as copyright requires human authorship [U.S. Copyright Office]. However, human contributions (such as modifying, arranging, or combining AI-generated outputs with human-authored expressive inputs) may be eligible for copyright protection on a case-by-case basis [U.S. Copyright Office].
• Terms of Service: When using these tools, you must comply with the provider's terms. For example, OpenAI prohibits representing that an AI-generated output was human-generated when it was not [OpenAI]. Google's terms require that you do not violate others' copyright or privacy rights when generating images [Gemini Apps Help].
• Age Restrictions: To generate images in Gemini, you must be at least 13 years old (or the applicable age in your country), and you must be 18 or older to use image editing features [Gemini Apps Help]. OpenAI requires users to be at least 13 years old (or the minimum age required in your country), with parental permission required for users under 18 [OpenAI].

Mistakes Beginners Make

• Assuming the AI knows what you mean: Avoid ultra-short prompts like "a dog." The AI will fill in the blanks randomly, often leading to unexpected styles or compositions.
• Ignoring model download requirements on local hardware: If you are using on-device tools like the Windows App SDK AI imaging features, remember that the multi-gigabyte model is optional and not pre-installed by default; you must trigger and wait for the background download via Windows Update [Microsoft Learn].
• Over-editing in a single prompt: When editing, ask for one or two changes at a time. Modern models like ChatGPT Images 2.5 are optimized for multi-turn editing, meaning they can reliably build on previous changes over a conversation [OpenAI].

Quick Answers

Can I copyright an image I generated with AI?

No, images generated wholly by AI are not copyrightable in the United States. However, if you significantly modify, arrange, or integrate the AI output with your own original human-authored work, those human-created elements may be eligible for protection [U.S. Copyright Office].

What is the difference between Nano Banana 2 and Pro?

Nano Banana 2 is the standard model that balances speed and quality, accepting multiple reference images. Nano Banana Pro is a paid upgrade (available with a Google AI Plan) that offers higher detail, advanced text rendering, and more precise creative control [Gemini Apps Help].

How do I edit a specific part of an image?

You can use local editing features. In ChatGPT, you can place comments directly on the image or use the "Sketch" tool to draw a visual guide [OpenAI]. In Gemini, you can upload an image and submit a text prompt detailing the specific changes you want to make [Gemini Apps Help].

Continue the Path

Now that you have generated your first image, continue building your AI skills with these guides:

• How to Write Your First Prompt
• ChatGPT vs Gemini for Students
• Best Free AI Tools Starter Pack