First of all thank you very much for commenting on so many games! Its so nice that you do that and Im trying to give quality feedback as well... :)
I love the idea and I like the gameplay. Jumping height can be a bit higher. I saw a few people mentioned your pixel art. I must say that I really loved the spooky animations!! I was curious to see what the next animation would look like! I loved the haunted painting!! That being said I really do think that you should try to work with a color palette (one of lospecs for example) - that might improve the impression of your art very much.
Nice job! :D