Replying to 3 Questions

I posted this in the trick tip forum but no one responded so I'm going to post it here.

1. Alright so whenever I do 3s I dip my head like a cork instead of keeping it parallel with the ground. I was working on it so now I dip it a little later,a s I'm coming around on the last 180 any tips for not dipping it?

2. I need help scissoring. I can never drop my front or back tail? Tips?

3. Ste up rails. The rails that you have to come from the side of and pop to get on, perhaps called urban style? Any ways I always pussy out, I get enough speed and height but never turn. Also when I do turn my inside ski never makes it over. It always hits the rail. Help? I slide left foot forward.