please... I am in need of a critique!

a real critique.

not: "Do more human reference."

we can all agree on that to start with.

I need something more. I'm working on going pro, but I have been forced to train myself. I have been working soley with pencil & paper since my access to a decent art program is iffy at best on account of time and money.

so here goes:

sometimes the old ways are the best ways... SW fan art [first timer]

what do you think? do I have what it takes? or should I hang up my guns now?