The biggest thing that I can't figure out right now is improving the description, does anyone have any advice on the best way to write one?
Does your description answer the 5 W's (and one H): Who, What, When, Why, Where, and How?
Q: Who is the Tapstronaut?
Q: What is he trying to do? What kind of game is it?
Q: When should people play the game? (Hint: PLAY NOW!)
Q: Why should people play the game?
Q: Where does it take place? Where can people play it?
Q: How do you play? How do people get it?
Use enthusiastic language! "Exciting! Addicting! Amazing!"
What kind of game is it? (The Flappy Bird of space exploration?)
You may need some sort of main screen/advertising graphic. If you look at the old school games from Atari and Nintendo they showed "amazing" full colour art and then had the 8bit graphics. Try Fiverr or even a local person you may know. Put the picture as your first one on the gallery.
This part is all about the sale so get out the <blink> tag! (Well, maybe not the blink tag)