Increase the time under tension for maximum fat loss and muscle hypertrophy. Try a 4 second eccentric phase on all compound movements - the extra time under tension forces you muscles to adapt to a new stimulis.
If you stick to your 8 - 12 rep range you'll burn more energy thanks to longer set times.
Keep it controlled in your stabilizing muscles and you will burn more fat AND build muscle ;)
Committed to your success,