Single Status Update
When artists say they made a drawing on their phones and call it a quick five minute sketch when it looks better than what I can do in 30 minutes
I used to doodle stuff on my 3DS sometimes with the Colors 3D app, and before that back in the day I'd sometimes doodle things in Pictochat. Still have a ways to go in terms of matching what I can do on a full PC or even a tablet, but what's helped me to get better at phone drawing so far is just thinking to myself "if I could draw on a DS which was much more limited, I can draw on a smartphone."
...also unless you have a galaxy note phone, you have to train your palm to float above the screen while drawing, which is 80% of the battle in itself