Oh wow, i serious, i never any (great) wallpaper like this on AP's Session Zero. The painting thingy you do there is seriously great.
I think the moderators and administrator will accept your wallpaper to the main gallery. The only problem i saw here (because i havent see the series) is this wallpaper might be a something called 'fan art'? I'm not sure, because i cant find any scan looks like this on the scan gallery D': is it my stupidity or not =___=

anyway, your main (i mean the one you submit here) is great, but its just too empty. I like the other version, the one with the blades and blood, but i think its position is not right there.. I'm not quite sure where should you put the blades, but maybe you want to try to put it in front of the character or put it on her back? Or alternatively, you can paint a scenic background.. maybe something like she is sitting on a room, and then you can see mountain, forest, or river through the window on her back? :'D this is just a suggestion tho~ and if you want to make an 'abstract' wall, you can play around with text (and fonts!) so your wallpaper wont looks boring xD hope this suggestion helps! 8DDD
pssh you have a great painting skill xD