I have made a new wallpaper called Blissful Sky. It is on github Here. The source and the exported images are avaliable. The wallpaper is 4K.
Looks good, reminds me of a very famous picture of Sonoma County.
I was hoping to get it included with the next ubuntu mate release.
I will try and get them included.
Can you make wide aspect versions?
I just pushed the wide aspect versions to my git repo.