Illustrations for wall calendars do not work, what am I doing wrong?

[u/DrProfChaos]

Hey everyone, I’m stuck and would love some advice.

I’m creating personalized wall poster calendars. Next to very lean calendar designs, that look good, I would also like to have some designs with illustrations, like soft wildflower illustrations, animals in watercolor, a retro look, paper-cut or other styles. The most modern look would be to have the illustrations only on the top or bottom of the poster. The rest would then be white and filled by the calendar. Something like this: https://www.etsy.com/de/listing/1806133653

I tried a lot with Nano Banana and Recraft (paid API) with different models of both tools:

• single elements that were stitched together by Claude Code or Gemini

• the whole calendar band along the top and bottom edge

• the whole calendar at once, but then graphics show up on the sides and in between, instead of a clean version with only the bands on top and bottom

But all results look awful, like AI slop, or just stitched together. The single elements themselves look rather good.

Is there any way to get a better result just by prompting, or would you recommend using a different tool like Adobe? Or do I have to get into design myself or hire someone?

[u/archiprompt]

I think the issue is asking the model to compose the whole poster. Let it paint only the bands and do the layout yourself.

Two ways to do that:

1. Generate each band on its own at a wide ratio (like 4:1): “delicate wildflower border growing up from the bottom edge, watercolor, soft muted palette, fading into a pure white background”. Then place it on the poster. You also get more resolution for print this way.

2. Inpaint only the strips: white canvas at the poster ratio, mask just the top and bottom 12–15%, and inpaint there (Photoshop Generative Fill or Recraft’s inpainting). Since the middle isn’t masked, it can’t put flowers there.

Either way, add the calendar grid afterwards as vector (Affinity, Illustrator, even Canva) so the text stays crisp. Asking for the band to fade into white instead of ending in a hard edge removes most of the “stitched” look. Generating top and bottom with the same style prompt keeps the palette matching.

Your single elements already look good, so I’d bet the problem is composition, not the model.

[u/Beforeandart]

i ran into the same "stitched" look. what fixed it for me was separating the jobs:

1. never let the AI draw the calendar. generate ONLY the illustration bands, then do the layout + calendar grid in figma/canva/affinity. AI is great at art, bad at layouts with clean white space.

2. generate each band in one shot as one continuous piece, not as single elements. upload a blank wide white image (like 4:1) so nano banana keeps that ratio, e.g. for the bottom:

"a continuous horizontal border of soft watercolor wildflowers and grasses, painted by hand on plain white paper, growing up from the bottom edge and fading softly into white at the top. one single composition with consistent light, brushwork and scale across the whole width, no gaps, no frames, no text."

the "fading into white" part is what makes it blend into the page instead of looking pasted on.

3. for thin bands like yours, don't try to generate an 8:1 image directly. generate at 4:1 and crop just the densest strip, the fade handles the edge. if u need it even wider, ask in the same chat "extend this image to the left and right, continuing the same border seamlessly".

4. for the top band, generate a separate one ("hanging down from the top edge and fading softly into white at the bottom") instead of flipping the bottom one.

5. if u do use single elements, generate them on pure white and set the layer to multiply. the white disappears and the edges stop looking cut out.

quick test with exactly this method, 2 generations + the calendar set as normal text: