Ok, I'll try that.
Although I still don't see much of a problem, it looks great on my screen.
More level icons.

The top row are levels that have yet to be unlocked.
The middle row is levels that have been unlocked.
The bottom row is levels that are completed.
Levels with a yellow number are kindoff like the 'challenge levels' they're harder levels, but you don't need to do them to complete the game, however you will need to do them if you want to unlock all the secrets.
They all slot together on a map like this:

(There will be several of these maps, each varying in size, i have 6 of them planned out so far)