To be honest, the first thing I noticed was a pretty quirky resolution, lol, it looks a bit too...square-ish. I'm
not sure I've seen such a screen resolution before. ._.
In terms of wallpaper itself, it looks pretty good in my opinion though some things like reflections need to be tweaked
a bit (the reflection of the clock doesn't really respond to the curved line of the tiles and that door has no
reflection). I'm guessing those things in the background are clouds? If they are, they need a bit
more...definition; you know more curls and that fluffy cloud-ish look. XD
And last, the clock needs some white-ish blue highlights since the BG is of the same color and I'd add more
highlights/gradients to the right side of the girl's hair where that shine from the door is coming from since the
light seems pretty strong. And of course, don't forget to add your signature to the bottom. Good luck!