Stage planning...you want to try to break up the shooting into 8 round arrays so you can reload while you move. Coming into a new position with only a few rounds in the gun kills you when you have to do a standing reload.
Sometimes they are unavoidable when shooting SS, but try to avoid them and reload on the move when you can.
For example, on the last stage you only shot 4 shots from the second to last box, but you had to shoot 10 in the last position. The last two targets you shot were available from the previous box, so you should have shot them from there, then you wouldn't have had a standing reload in the last box.
Sometimes shooting SS or Production there are 10 or 12 round arrays that you'd like to shoot from one spot, but it helps to "borrow" some rounds from the previous mag if you can see some of those targets from elsewhere.
This sort of stuff will come to you soon. For your first match it looks like you were pretty accurate (nice hits on all the steel). SS is a challenge for a first timer for sure.