My favorite way to cut patterns out is on a counter-height flat surface.
If you're using a rotary cutter, place your cutting mat on the surface first. For the most efficient layout use full-sized pattern pieces, paying very close attention to the grain line. Lay fabric with the wrong side up on the surface and lay the traced pattern pieces opened out on top. The tracing medium will cling nicely to the fabric, but it's still a good idea to use weights (anything will do - cans or scissors or teacups) or pins if you're cutting with scissors.