Overall I will say that you have made a really good game!!! I especially love the main character and his amazing funny walking animation. The gameplay idea is overall simple and the game is fun to play.
The ghost idea is cleaver and it makes this game goes from a good to a really good jam game. The music was okay, but part of it was a bit weird and it did not sound very well, but okay music can be really difficult to make. I will maybe recommend you to make a short music loop and instead use the time to make it sound really good.
I had some jumping issue, and I therefor ended stop playing in the first level with a rose. The issue seem to be that the jumping power was not always the same, and I therefor had a really difficult time jumping long enough.
Overall is this a game with a lot of personality, and the unpolished visuals and music makes the game very charming. So this is good jam game, and you can differently be proud what you have made. Well done.