I really like your art style :) Although the clouds are not contrasting with the white background as much which means they are barely visible. On an LCD screen, you can see them better when you look up at the image, and not down. Apart from that, pretty good!
You can draw on a phone? Interesting... I like it though, it is an interesting aesthetic, very disco-like I suppose you could call it.
There's a phone app called MagicMarker, which I decided to get on my phone out of curiosity because I saw it on another phone, and at one point I decided to do some graphics, what I thought would perhaps be interesting for NG's 20th anniversary (which is next year). I got around to doing these three, but my favourite of the three is Strawberry Clock.
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