Exciting, looking forward for more.
Don't rush it too much, shows in the inconsistent art quality, I assume you are not working against a dead.
Also try to find different fonts to use for the text, and not blocks of simple sans-serif.
Issue with making it looks pretty is it takes too much time. I have to start college soon, and the classes are really hard. I won't have too much time for art. Reason why I did this so fast, this was literally my last free weekend.
I rather push out sketchy arts than nothing at all. Maybe next summer when I have more time, I'll go back and clean up the sketches. But for now, sketchy is the best I can do for the amount of time.