Well since it has Zero in it it's a plus!Hmm,I basically like how your wall turned but I could say what I think would make it look even better,somehow I think that darker tones of colors could do better and also less effects in it,I mean yeah the sparkles look good and makes the wall itself have a sparkle but I feel like there's a little too much.I like the flower in the corner,it's a nice touch!And well I think it would have looked as good as now or how knows maybe better if there was just one of their postures,but it still looks good like that!Why do I think it would look better darker well maybe it is because of the whole idea with him drinking her blood,with the idea of vampires.And yeah a bigger resolution would be more effective.
Sorry for my criticism it is just my opinion I wouldn't have commented if the wall didn't have potential,it looks great as it is too!