A lot of the styles you are trying to mix simply don't look that great. For instance, the jungle theme then the rosha sprites mixed in, the contrast between the two styles of sprites make it jarring to look at. In the second picture, after the edited posts, the forest floor and area surrounding it lacks details and looks incomplete.
The dirt mountains, grassy mountains, and mushroom mountains don't belong together in such close proximity and again create a jarring contrast. Not to mention the thought of where all the water is coming from near that waterfall, there is no source for it to come from.. The beginning bridge you show off in the second picture is another example of jarring contrast and should be remade with a single style not trying to mix three which do not belong together.
The ricepaddy water also doesn't go well with the waterfall, the trees and grass tufts should never go ontop of water tiles, there is a dirt-water border you can use instead of the grass border for the transition into the water at first, and typically servers have swimming zones be PZ or have a script in place which makes it so creatures can't walk across water like Jesus in his third coming, the second bamboo bridge could either be replaced by the first bridge style before it or have the first bridge be changed, and if you keep the bamboo bridge add bamboo stairs going down without the 459 stairs so it doesn't just end abruptly and looks like it actually started to fall.
