A Start At Gesture Drawing (Digital)

Hey all,
I just joined today, and enjoyed the thought of getting some critique on my sketches.
I do my sketches on my IPad mini.
These are timed gestures at 1 min a pose.
Thanks for stopping by.


And here we have an attempt at some facial features.

I don't think the "[img][/img]" code works on this site.
here are the links.
http://imgur.com/0PdJQ5p
http://imgur.com/IGAgtqC
http://imgur.com/jHhtCaV

Hello Rockstar,
I like your gestures a lot especially the ones with an action line and medial line. My critique for you would be to try to be more confident in your line. I think line confidence is harder on digital devices because of the slick surface of the screen. Your facial features are great I usually struggle with them. The only critique for the facial features would be to add a bit of shading because they all look very flat. That is nitpicky though. I really like your stuff and am looking forward to seeing more. If you want to check out my stuff look at www.adamantiumdesigns.com
Thanks,
Adam