Bit of advise...this is relevant to all jumpers... what I do is get my horse warmed up well, walk the coarse...stand infront of the jump, stride out twice and that's the approximate landing spot, stride out four strides and that's about one horse stride, you can work out how many strides your horse will need between each jump. Watch a couple of rounds, memorise the coarse, count other peoples strides whose horse is about your horses stride, pick out what they are doing right and wrong, after your horse is warmed up and its your turn to go in, switch off to what is around you and concentrate on you and your horse. Take your time and go for a steady clear, as you go over a jump be looking fior your next jump, not below you nor anywhere else, this way you will not lose your way. Its better to go for a steady clear, a poss time fault, than rush it and have a jump or two down. Remember what you do at home, you can jump well at home and its no different in the ring. As you come to a verticle, do not kick your horse on as you will take the jump down or you can go through it, sit deep and relax, do not stay bent forwards as you will unbalance your horse. Allow your horse to look at each jump on approach, he will know what to do to jump it. And most of all, enjoy it, its fun not torture, don't bother what anyone else says, you do it the way you want to. Don't copy other peoples riding as you will confuse your horse. Also, before you go in, ear wig when people who have already jumped are talking about how they made a mistake or which is the best line if they went clear. Always aim at the centre of the jump, not to the left or right too much.
Good luck and enjoy it....if you show nerves, your horse will feel it.
A horse belongs in a stable not on a table!