Okay, I got decent grammar when I'm writing normal dialogue. But there is a big difference when it comes to writing a novel. My biggest problem is comma usage, I think. It has been noted to me by a beta reader that I got most of the things spot on, except for grammar and expressions. I'm Norwegian so that obviously makes it a bit more difficult for me. I keep banging my head against the wall and I stop myself from writing to the extent that I can. I know first drafts aren't supposed to be perfect, but that won't help me to learn. Or well maybe, I don't know...I look back at things I wrote 6-7 months ago and I laugh, that is how bad it was. I know I have improved... but I'm not good enough. I digress as usual though. I don't know if this is enough information, you'd most likely need an excerpt or something, but I won't share openly. But if you got any tips or thumb rules or whatever helps/helped you. I could use a more active beta reader (the one I got now is pretty busy thus can only give a small portion of feedback) ---If you are interested just pm and I'll think about it.