True that. I'm still not comfortable enough drawing with my phone with my finger, since the rubber tip stylus pen I have is too big, and its just uncomfortable, although it hurts and numbing my hands sometimes. And sketching on the phone directly make my style changed and it looks more weirder, so I sketched everything (to the rough draft) on paper as I love drawing with paper the most before taking a photo of it.
You might just try scanning your drawings to the pc first and try to get comfortable with your tablet.