Hi and welcome to pixelation.
I made an edit:

-There are some lightning problems here and there like it's not clear what's going on with the drawers or that balloon that hardly reads as such.
-The dithering above the drawers looks way too busy while really adding nothing to the piece.
You should avoid dithering with high-contrast colors.
-The ninjas don't read as such because there's nothing adhering to the ninja cliche to them.
I covered their mouths, gave them something I think reads as a face and gave them dark clothing.
-You don't need to post zoomed pictures on here, clicking and shift+clicking lets you zoom in and out of pictures around here.
Keep it up!