1. Don't get stuck on yourself.

* What is the meaning of 'stuck on'?

2. He applied/wore a heavy makeup.
* Which word should I use, apply or wore?

3. Speak in full clear sentence.
* Is this one OK? Don't we have to add 'a' before'full'?

4. Don't spin in your chair or let your leg tremble.
* Is this a correct sentence?

2 answers

1. "stuck on" means that you think highly of yourself

2. He applied

3. add "a"

4. Don't spin in your chair, or let your leg tremble.
In #4 you do not need the comma before "or"