The hearts are actually animated to look like gems, although they don't look like much in screen shots, im really proud of the animation... might  put up a gif if you guys want

The character definitely needs to be shaded, and the hearts need a lot of work, but the tiles look pretty great.

 yeah i plan to fix the char, but he is supposed to have the outline, just because i plan different styles of pixel art throughout the game and i want him to have a visible outline

The sharp edges of the character doesn't blend too well in with the background. Also the caracter looks flat, maybe a bit of shading may be in place.

Also there is a tendency to pillow shading on the hearts in the upper left corner.

 Thyanks, I noticed that too.... gotta go to ms paint now >.>

You could change the tiles' pattern to blend a bit better into each other, it has a very distinct pattern that stands out a bit too much.