mainly the whole use of a docks tileset as a walkway, sets up a problem when you try to use corners, also the water tile and the sand do not match, look ugly, and dotn really go together, you used shadowed sand to make it look wet? (i guess) another no no, your almost better off using the beach autotiles (the 4 of them) and working with those to make the water and sand look less odd.
I didnt notice there was a forest map until now >.< oops, lookign at it, it seems less foresty and more plainslike, not enough trees, plants etc, you also made a few mistakes with the tall grass tile, theres some trees that look odd due to their placement, and your tall grass patches are boring and unintresting to look at (also i noticed you used the mushrooms under some trees, while nice to look at, it makes one part of the trunk passable and allows the player to walk right through it, might want to add a second mushroom to your tileset and make it non passable for specific use in locations like that
as for the map follwoing the forest map, you used the tree autotile but didnt put any thing supporting it, makes it look wierd, also why is there a log to nowhere just hangin on the edge of a lake, physics would say that the log would just fall in(also the same problem with mushrooms)
i found hte cave, in the future might i suggest makign entrances and exits of maps much more obvious, so the player doesnt have to fumble around lookign for where to go, perhaps some arrow charsets, or a sign or something.
anywho, the caves dont look that bad, you kept everythign nice and compact, which is good, however the lamp on the floor needs to be made passable so that it looks a bit better when the player is near it, also the wall setup once you enter the cave loosk a bit wierd, kinda the aprt thats like ()()(_)
the second cave doesnt look bad, but everythign seems sort of palced there, almsot liek it doesnt belong there? you might need to add some varying heights inside the caves, or add stalgmites etc, just things to break up the map and draw the eye for a bit.
i think thats all of them >.< if you ever need help or want tips or something you can always drop me a pm and ill do my best to help, mapping is imo one of my fortes.