Um idk i honestly didnt think of that you could get more fish i guess but I typed the whole thing really quick because I panicked about you not having an idea yet
Also, when you start off, start with basic art first (sketches or something) or even no art at all and go program...
Your art is important but with no gameplay it's useless.
Here's what your priority should be:
1. Programming major gameplay
2. main art
3. sounds/music
4. small art/ minor features programmed
gogogogogogooooooooooo