Really good job! Especially for a first jam.
I was initially a bit confused as to why the coins didnt give the gold based on the number shown. But I figured out its just related to how long they are on the map. But maybe it would be fun to give their value based on what it says, so the player is encouraged to try to pick them up quickly, forcing them to play a bit more risky.
Great job overall, and welcome to the game jam world :)