AI image tools can turn a written description into a picture. They can also help change parts of an existing image, such as its background or lighting. This gives people a way to explore visual ideas without starting from a blank canvas.

A useful result still takes choices. You need to decide what the image is for, describe it clearly, inspect what the tool creates and make changes where necessary. In this lesson, you will practise that process.

Decide where the image will be used

Before writing a prompt, think about the finished image. A square course thumbnail, a wide blog banner and a presentation slide need different layouts.

For example, a thumbnail needs to remain clear when shown at a small size. If you plan to add a title, leave an area with a simple background so the words will be easy to read. An image packed with small details may look impressive when enlarged but confusing in a course listing.

Start by deciding the image’s purpose, shape and main subject. Those three choices give your prompt a direction.

Describe what you want to see

You can begin with an ordinary sentence:

Create a square image of a woman learning to use AI at a laptop in a welcoming home workspace.

Then add details that matter to your purpose:

Use natural lighting, a dark blue and teal colour scheme, and a clear area on the left for a course title. Keep the background simple.

You have described the subject, setting, format, colours and layout. You do not need a long list of artistic terms. Include details because they help the tool make a better image, not simply to make the prompt longer.

Choose a tool

Several tools can create images from a description. ChatGPT Images, Adobe Firefly and Canva are examples; their controls and available features differ. Some allow you to upload an existing image and describe the changes you want. OpenAI Help Center

If you already use a design app, its image features may fit naturally into your work. If you are experimenting for the first time, choose one tool and learn its basic controls before trying several others. Check any usage limits and terms that apply to your account.

Refine the image

Look at the first result and identify one or two things to improve. Give specific feedback, such as:

Keep the person and laptop, but remove the objects behind them and leave more empty space on the left.

Or:

Make the lighting softer and change the image to a wide landscape format.

If you are editing a picture you already have, describe what should change and what should stay. For example:

Remove the cup from the desk. Keep the person, laptop and lighting as they are.

An edit may also change details you wanted to preserve, so compare the new image with the original before using it.

Add text with care

Images with titles, labels or other writing need extra attention. Check every word for spelling, missing letters and awkward placement. Also view the finished design at the size people will actually see.

For a graphic with a lot of precise text, it may be easier to generate a clean background image and add the words in a design editor. That gives you direct control over the font, spacing and exact wording.

Check before you publish

Look closely at faces, hands, objects and anything that needs to be accurate. A convincing picture can still contain a detail that does not make sense.

Think about how viewers might interpret the image. If you use a realistic AI image to illustrate a real event, person or place, make sure you do not present an invented scene as a photograph of what happened. If you are creating material for a business or client, check the tool’s terms and your organisation’s rules before using it.

Try it yourself

Choose a simple purpose, such as a course thumbnail or blog image. Create a first image with this prompt structure:

Create a [shape] image of [subject] in [setting]. Use [style or colours]. Leave space for [anything you will add later]. Keep the background [simple or detailed].

Inspect the result. Ask for one change to the layout and one change to the appearance. Compare all three versions at a small size and decide which communicates your idea most clearly.

Key takeaway

AI image tools can help you create and edit visuals, but a good image begins with a clear purpose. Decide where it will be used, describe the important details, refine the result and inspect it before sharing.

In the next lesson, we will explore tools that work with voice and video, including transcription, captions and generated media.