Too much graphics...
It's too heavy.
I think you should slow down a little.
Yeah I agree, the mountains tiles look very good; they look realistic and the details in them look great, too! About the colors of the PC, yes, they are a bit too much just for a simple Pokémon Center, but I'm fine with it. Maybe making it red is fine, though (but a different shade of what the default is).I'll keep saying it: The mountain tiles (the ones light-brown) look great. Very realistic.
But, I think the colors for the PC are a bit aggresive, but, meh, that's just my opinion -_-
(Oh, by the way, check that you used a tile wrong, at the right of the PC, there's a tile that looks "moved")