I feel like my IRL line-sketching etc is still pretty good but for some reason it translates really badly to digital pictures. And I don't get to use colour stuff IRL so it's more fun to muck around with digitally (especially with being able to lock pixels, layers etc)
I'd love to use the pen tool, but frankly I don't have the patience for it.
Your digital stuff looks good though, so I wouldn't worry about it.
I don't really use the pen tool much any more. On my Frozen picture, for example, I only used it on lines that needed to be really precise. I think my hand drawn lines are mostly fine though, as long as you don't compare it to something with the pen tool, haha. The last time I used it for a full picture was the Aigis picture I did for the OT3 OP (Which I think is probably my best picture, as an aside).
I haven't done any traditional drawing for about two years now. I have no idea what it would even look like.