its a start..
rather too Squareish (not really) for my liking O.o i like more Rectangles
its also rather plain on the left side.
Nice render and blending thou
for borders..
just make anew layer..
click CTRL-A (select all)
and go to EDIT--> STROKE---> 1px inside
you are not PRO yet but you are improving from the alst sig u did