Bugs
The camera exposes untextured areas at the beginning. Also the player doesn't flip when changing directions.
Strengths
The map is very unique. I like your use of textured brushes to make it look like real canvas.
Weaknesses
It's not very clear what the actual goal of the game is. Also it's hard to navigate as there are no clear boundaries.To improve
Even if it's just in the game description, explain what the aim of the game is.