Would it be a good idea to start a thread as a single place to post your times, splits, solve vids, etc. to ask for advice on their solves?
Individual people tend to have different things slowing them down. "you need to turn faster," "you need to focus on looking ahead," "you rotate the cube too much during F2L," "you need to work on your accuracy," "use a metronome, your solves are too choppy," "buy a DIY."