I created Floodpunk recently during the One-Bit game jam, which was a ton of fun to create and it got some good responses! I've never submitted a game to Steam before, but given the positive feedback I wanted to try with a cleaned up version of my game with more content added, to extend the time from 10-15 minutes to about 1-2 hours. 

Has anyone else done this before, and if so do they have any advice?