Hey, congratulations on starting with the new software.
What software are you using exactly? AliasStudio or SketchBook Pro?
Here are some tutorials/videos of the sketching process.
SketchBook Pro:
http://aliasdesign.autodesk.com/learning/tutorials/details/SketchBook%20Pro%20with%20Bobby%20Chiu_133140/
http://www.youtube.com/watch?v=DIhJYO474Dg Anything by heroemission is done with SketchBook Pro, or AliasStudio.
AliasStudio
http://aliasdesign.autodesk.com/learning/tutorials/details/Digital%20Painting_133056/
There' lots around this site, so have a look in the tutorial section... under articles.
Good luck.
K