Controls are a bit oversensitive (though playing with a gamepad seemed to help) but the base of the game is otherwise pretty solid ! I'm wondering, what did you use PICO-8 for, out of curiosity ? My guess would be the pixel flowers and grass assets but I'm not sure.
A minor touch that could have helped it stand out a bit would have been giving the skater some vertex color, even without any proper texture that would have done a good job at representing N64 aesthetics for the character. Neat game in all cases :)