Floor and Ceiling Composite Design for Lower Ground Studio

I need feedback on my ceiling design. The studio is on the lower ground floor and general living quarters are on the ground floor. This ceiling is part of a Room Within a Room construction and I need pointers as to how I can further increase the soundproofing. I want to be able to have loud music and bass and not being able to hear it above on the ground floor. Likewise, I don't want footstep noise coming down into the studio.

I'm sorry but I can't understand what your drawing is. Can you please label what the layers are as the chart on the left is confusing and hard to read. cheers john