1: I don't even realise when I'm using everyday ones that go with organic speech patterns and they often slip through without me catching them. The ones I put in on purpose are geared more towards tf's so I aim for mechanical types if I can, often substituting from organic to non organic.

2: I write in 1st person by default so this is something I've never had trouble with while in that mode, however if I move to 2nd or 3rd I do have trouble. Without being inside a characters mind I can't express the emotions using their body language etc as easily.

3: Again, I'm fine in my 1st person as the char see's and interacts with the surroundings. Move into a different mode and I skip over it.