I urgently need you to help me with these sentences. Thank you very much in advance!

1) Theatres were designed as large wooden structures with three tiers of galleries surrounding a pit, open to the sky. Into this yard projected a roofed stage, raised about five feet from the ground, where most of the action took place.
2) In this yard there was a roofed stage... (is it possible?)
3) A roofed stage extended into the yard/was projected into the yard/jutted out into the yard ...... (which of them are possible??)
4) The scenery was made (UP?) of simple objects, for example a crown represented (stood for?) a vase.
5) The Elizabethan theatre was a wooden structure consisting of (made up of but not formed by?)three tiers of galleries..
6) The Actors were very trained professionals and each of them had a patron.

1) OK

2) In this yard there was a roofed stage... (is it possible?) <~~yes

3) A roofed stage extended into the yard/was projected into the yard/jutted out into the yard ...... (which of them are possible??) All would be fine IF you remove the word "was" in the second expression.

4) The scenery consisted of simple objects. For example, a crown represented (stood for?)<~~yes a vase.

5) The Elizabethan theatre was a wooden structure consisting of three tiers of galleries.. <~~OK

6) The actors were very well trained professionals, and each of them had a patron.