Well I misunderstood that one , sorry for that
but anyways I worked a bit on the pictures I should have updated lol
I tried to unify the pixel size so the tree is now 64x64
(I spend literally hours on pixeling trees and realised I'm
faaaar away from making an actual good looking tree.
So I just readjusted the size)
As well I learned a few things by reading through the forum and tried to use them on my tileset:
I tried to use more then one grass tile so it doesn't look so plane
And I tried to make the hight difference more clear by using different textures
Note: The texture I used as dirt is just a placeholder as my time was limited
Screenshot of the game: