First time OTB, notation errors

Played my first OTB game yesterday with a friend, not tournament. Oh man, is that hard.

Halfway through we gave up on the clock (15/10 game) because we both kept on forgetting. I wrote down the moves, I  thought I knew notation. Guess I don't! I remembered my 2nd and 3rd moves, notation was wrong. I don't remember my fourth move, the notation gives an impossible position.

I guess I can go over past games on chess.com, watching the moves but not looking at the notation, and writing down what I think the notation is. Are there any other tips?

Just keep doing it.

That said, I still make move errors on notation, though I can usually figure out the problems when looking over the score sheets later

Same thing.

I have not managed to keep a perfect score too many times. And sometimes I forget the clock...

What I do to make my notation better is solve puzzles from books, writing down the answers on paper. Then, when I check the answers, I will see if I made mistakes.

One game that really had me confused was a simultaneous against an international master, where I played black, but the table was set up so that the black pieces were on the white side of the board. This was due to the simul being in a park and my table was a stone table, while the other tables were plastic ones, so my table could not be turned. This meant that I had to ignore the algebraic markings on the table and figure it out from the black perspective... Managed most of the way through the game to keep it accurate so I am happy with that.

Also managed to have a slight advantage until move 26 or something, but of course I finally made a mistake and lost the game in the end...