Very good for someone just starting out, theres no pillow shading, but right now your colors are too saturated, the colors need some more contrast too.
I've taken the liberty of editing your watch:

-made the ambient lighting more noticeable and (for coolness sake) made it red
-thinned out the wrist band
-Desaturated the colors and played with the hues
-and some other little things
I hope you don't mind this edit.