Short answer
Choose the post’s orientation, place the subject in your prompt, and describe the open space you want for a caption. Use the available aspect-ratio controls in Vega AI, then check the result in the destination’s crop before sharing.
Plan the crop before the scene
A tall image gives you a different layout from a square or a wide banner. Look at the destination’s current preview and choose the orientation that fits your post.
Place the important subject away from areas likely to be covered by captions or interface controls. Leave room around it when you may need another crop later.
| Layout | Prompt decision |
|---|---|
| Square | One clear subject with room around it |
| Portrait | A subject that fits the height and space for the caption |
| Wide | A wider setting with the subject placed to one side |
Describe the empty space as part of the image
Open space is a composition choice. Tell the generator where it belongs and what it should look like. Adapt these original prompt recipes.
A square announcement
Create a square illustration of a small houseplant on a windowsill. Place the plant in the lower-right area, with a calm pale wall filling the upper-left space for a caption. Use soft green and cream colors.
A portrait post
Create a portrait-oriented scene of a tidy desk with a notebook and a cup of tea. Keep the objects in the lower half and leave a simple softly lit background above them. Use warm natural light.
A wide header
Create a wide landscape image of a quiet mountain path at sunrise. Put the main trail on the right and leave a softer, less detailed sky area on the left for a heading.
Add the final words after choosing the image
For a precise announcement, keep the final wording in your posting or design tool. You can adjust spelling, alignment, and contrast directly after choosing the image.
Check the text against the image at the size people will see. A caption that looks clear on a large export may be hard to read in a small feed preview.
Turn a useful still into a clip idea
If the image works as a still, consider a small amount of motion: leaves moving, clouds drifting, or a gentle camera move. Keep the subject and caption area in mind when writing the video prompt.
Vega includes still-image and short-video workflows, so you can choose the output that fits the post rather than treating every idea as the same kind of generation.
- Choose the orientation and caption placement.
- Write the scene with the subject and open space.
- Generate using the available settings.
- Check the destination crop and add the final caption.
Questions
Do I need exact platform dimensions in the prompt?
Use the available aspect-ratio controls and check the destination’s current crop. The prompt can describe portrait, square, or wide composition and where the subject belongs.
Can I reuse the idea for a video?
Choose Vega’s video workflow and describe the motion you want. Keep the composition and intended caption area in the request.
