I have this in scraps, but this is the colored version. I suppose you could use it for a wallpaper if you want to as long as you don't go around distributing it.
It has Ami, Rei, Mina and Mako, the children of the Sailor Senshi. This is a fan art of the story from the Materials Collection which makes it official, but outside of the canon. Kousagi is the second daughter of Usagi and Mamoru. Her older sister is Chibiusa.
I scanned and colored this in Photoshop. The background is also digital.
I took a guess at the colors of the Sailor Fuku. Thi is based on the colors that I saw on Usagi and Chibiusa's fuku. The blue bow because Usagi's eyes are blue and Chibiusa's eyes are red, the bows match those colors, so therefore Kousagi's bow should be blue as well. The back bow matches the front bow. This made the back bow blue as well. On Chibiusa her fuku color is pink to match her hair, so I also made the fuku color lavendar to match Kousagi's hair. So I tried to use the logical order to make a rough guess of the colors. I'm probably wrong... but only Takeuchi-sensei knows that...
Small update. The picture was re-inked. I used Manga Studio EX, then traced the entire picture, then imported it into Photoshop, selected the lines, then I made it a path, filled the path and ended up with a much better outline. I also did a little adjustment with what was colored, but not much.
Changed color in line to the: [link]
(Note that it's more approximate than the other updates)