Hi. Hanging Pawns' you tube site has a couple of videos on analysing games and evaluating positions which might help. Have a look. But there is no harm in just looking for stuff based on your current ability and knowledge. I try to look for themes rather than move-by-move issues. One way to frame improvements is to look for things you need to start doing, stop doing, and keep doing. Find one of each in every game.
I want to start analyzing my own games as well as gm games. What is a good method of doing this? Is using the tactical assist in ChessBase a good idea? What should be included in my anotations.