Traditional -> Digital

[ChantalFournier]

Well, apparently, a Cintiq gives you better lines than a tablet. So that's one thing. Also, PS sucks for inking. There are other software more appropriate, like Manga Studio and up to a point, Flash (with the paintbrush and the thick and thin setting on.) I think some people also use Paint tool SAI for the lines as well.

It's also important to check your settings on your tablet and you software to make sure they are well set for you.