I LOVE showmanship. There's a lot more to it than people think.
I know right! I'm still a beginner, but I kind of enjoy it! Almost everyone one I know hates it..
Okay to you EquestrianHollywood (this is from my experience in small shows):
-You can use a halter or a bridle, whichever you're most comfortable with. Your regular bridle should work, just make sure its clean(: if you use a halter it should look like this: DOUBLE LEATHER HALTER AVG SIZE - Horse.com
-Pivots are usually like 90, 180, 270 or sometimes even 360. I would practice 360s so you whatever the pattern will ask you to do, you will be ready(:
-10 seconds is pretty good for setting up, but work on getting it faster. Judges usually prefer for you to set up in as little time as possible.
-What else to work on? Trotting and walking in a straight line like PBritton2U said. Make sure when you're walking to the judge your horse is in front up him or her. When you are walking or trotting away make sure your horse is still lined up with the judge. Look back at the judge 3-4 times. Sounds silly, but the judges like that.
My best advice: SMILE
!!! It may feel like torture out there, but the more you smile, the more the judge will like you which means: THE BETTER YOU SCORE!
Good Luck! Have fun(: