This is what I used to struggle with but this is how I remember them:)

I was reading this article about this dyslexic rider and how she remembers courses by colours. I started doing this as most shows their jumpss are different colours or fillers. For example if the jump had a sea filler I'd remember it by that but if it had red and green poles with no fillers remember it by that.

Remembering courses takes time so give yourself plenty of time and watch the other riders. You just need to find a way that suits you:)

give yourself plenty of time if its a big class dont put yourself near the top, walk the course and after every 3rd jjump you get too do the course in your head untill you get to that jump your on i.e if you walked to number 6 walk the course in your head to jump 6.... so on. Walk the course as many times you can in the space provided for course walk. Come out of the arena memorise the course again. Depending where you are to jump.. either watch a few or go and warm up either way give your pony a warm up then come and watch a few then go round the course in your head again.Dont panic and if you have a sudden blank mind ask politely to get moved down ive had to do this before lol! oh and like someone said below DONT get people to shout the course out to you if you are competing as this is classed as outside ring help and can get  disqualified. good luck xx

If you want you can go around the course a few times on foot to help or practise alot but dont tire your pony out  before the show

Hope this helps goodluck hope you come first in the next one!! :)