Show Jumping Questions?

I'm jumping for my first time in a show and I was wondering if I need to buy any other Equipment (saddles, bridles, breeches ETC.) just so it will look nice . And if you have any tips on any thing to do with jumping I would love to hear from you, Likeevenn if your telling me what to do when you get there to when you load up because i am completely lost in this Yeah I need anyone and every one to tell me anything they know about it it would mean a lot to me -Much thanks <3