Do you mean improving your ear? If so, there're a couple things you could do.
Try out free programs on the net for ear training. Just do a google search, you'll find some.
Try to sing along when you play your scales.
Get someone else to play a chord or scale and identify it's type, or get someone to play two notes and identify the interval (without looking, of course) - this is like using an ear training program but using a real person to help.
"You must stab him in the heart with the Bone Saber of Zumacalis... well, you could stab him in the head or the lungs, too... and the saber, it probably doesn't have to be bone, just anything sharp lying around the house... you could poke him with a pillow and kill him."
- Aqua Teen Hunger Force, The Universal Re-Monster