Yea, pics are HUGE!! A few things I got so far:
Clean the comp of dust
DEFINETLY organize the cables cause its one HUGE rat's nest. If theres any cables you arent using, just hide them behind the mobo tray. As for the ones you are using, put them behind the mobo tray and run them to their particular device. Organizing cables could drop you anywhere from ~2-~8c and getting the dust out will also drop temps ~1 or 2c.