Sorry, I got confused with the dates, I'm not sure we still can submit our entries, but anyways, I had already done it and was waiting for the deadline in case I had any more ideas for the wallpaper.

https://postimg.cc/hQ8zWRLx

https://i.postimg.cc/CMLJW50V/wallpaper3.png

I can crop it mobile. It was designed in SVG with Inkscape.

Wallpaper released to KDE under the CC-BY-SA-4.0 license.