CONGRATS ON YOUR NEW TABLET!!! overall, you're artwork could use a little bit more refining, but you do a nice job with pencil/shading! are all the things posted on your DA site things you did for fun? or were they assignments for school?
don't worry too much about the state of your art, because others always view pieces differently than the artist... ^_^ plus, i'm sure you'll get the hang of your new tablet and you'll see your art improve! just keep it up! i've still got a lot to improve on, and i'm by no means very good at drawing let alone the tablet yet (i think...) but that's partially why i'm doing commissions...because they pose a challenge, and i'm hoping to get to a point where people will actually commission me for $$$ because i'm pretty much broke...
xp
if you ever want help, or someone to give constructive criticism feel free to ask any time! ^_^