Need help with studio room!

[entenow]

hi

so i finally arrived! i took all the old stuff out of our cellar and trashed it!! :-)
So now, i have a small room (3m * 4m *2m) that i want to use as a studio room! right now there's carpet on the floor and the walls are solid brick and painted.

Can you help me a little with the acoustics? Especially because the room is so small and there is not much room for improvements!
Whats the best for the walls? plywood?
i am a total newbie in this sector!

HELP!

thanx


entenow