Playing Card Digital Sketches

This is my first attempt at digital painting!  I consider myself computer illiterate at times, so I'm proud of these.  It took me FOREVER to make these, mostly because I was experimenting with techniques in the beginning stages.  I may or may not have a technique sort of down; at least one that'll help me complete 52 playing cards.  Anyway,  here is what I've completed so far.

My attempt at digital painting:

It needs work obviously.  I tried to experiment with modeling versus line work.  I'm not sure where I'm going with this, but it looks like it's getting there, whatever there is.