[Crono]

I highly recommend using the normal pics1 tileset, atleast for practice. The level is masked by its pretty graphics but needs a lot of work done. Style is always an opinion, but tile errors are something that can be factually pointed out. They're rarely justified, so I circled the tile errors you should look into fixing.

red = errors
orange = not sure if tileset problem or error
pink = questionable positions
lightblue = remove

I'm sure there's more but I didn't get a good look. Just keep practicing, the level atleast serves a function.