I felt it was only proper to christen it with a proper sissy wallpaper. There was plenty of discussion on newfapchan about girly wallpapers, but I figured I'd make one less girl-centric and more sissy-centric.
In case you're a sissy who's lacklustre at determining hues, the purple background has text repeating "I am sissy. I ♥ boys" (to go with the sissy's fabulous panties (I sooo want a pair, but I have no idea where I could even find them)). Of course, don't let anyone tell you that precludes you from saying "I ♥ girls" too!
As a bonus (and alternative if you're a bit hesitant to have something secretly saying you're a sissy for all the world (visiting your home) to see: Here's the first sissy game (the first post on this site, even!) de-textified and slightly adjusted for 1920x1080.
But don't let that stop you from searching the net to find the perfect wallpaper to express your femininity. Or - even better - make your own; you're the best one to know what your inner sissy loves.
I know there are some sissies that have to share a computer (and not everyone that uses the computer may be a sissy), but I recommend it to all the lone sissies with a barren desktop crying out for your feminine touch. You may not be able to wallpaper your room, but you can certainly wallpaper your desktop! :D
(and if anyone would like me to post a slightly tweaked version of the first one with different text or more/less visible text, just let me know).