So I made a mock-up scene using pyxeledit and some problems became very apparent. Made an example cliff. Improved the grass.
I would greatly appreciate if you could give me some pointers on how to improve some of these sprites and tiles.
Specifically, the water tiles, the tree and how would I go about squeezing a tower sprite into a single tile, as I've had unsatisfactory results so far.
Also, I'm not sure how to draw the sprites in a sideways view with it looking good.
Every other comment is, of course, also welcome.