What are the steps that the gas in a nebula goes through as it becomes a star.?

Billows of gas and dust shrink and end up noticeably hotter as a result of gravity and fall in the long run. Temperature ascends in star until atomic combination happens and quits giving way since it matches with gravity compel.I hope it helps. 

Texture and composition are different because they are not the same aspect. texture has to do with feel and so on, where as composition is the chemical makeup which you cant touch like you can texture.