This is the account you come to for honest--and often harsh--feedback. I really don't mean to offend, but I think wattpad needs one of these accounts. If I've legitimately hurt people's feelings, I'm sorry. I promise I am just trying to help you improve your writing skills. If you're just writing for yourself and don't much care about the grammar and criticism, that is absolutely fine, so just tell me.

In the hopes of not scaring anyone away, here is my list of criteria:
concise writing (don't waste words)
sophisticated style (not high brow necessarily, nor: This is a dog. It has fur. It's really soft.)
good grammar (it's one of my pleas that anyone who aspires to write any kind of thing buys a critically acclaimed grammar book and uses it)
variation in sentences
writing style/grammar fitted to the character
engaging plotline
three-dimensional characters
realistic characters
contrast in tone (and everything else it makes sense for)