Wazuela...I'm going to take the other side here. There's really nothing 'wrong', per se, with you holding the cue with your fingertips. The stroke is all about using the weight of the cue, and timing, anyway. It's not so much about how you hold on to your cue (although Island Drive's comment about 'cradling' the cue in your hand is the standard we teach), as much as it's about keeping your grip pressure light, and the same, throughout the range of the stroke. Many people hold the cue loosely on the backswing, but when they change direction, they clamp down with their grip. A fingertip grip, like you're using, would not allow for much grip pressure...so it might not be so bad. For most of us, it would simply 'feel' wierd...but that doesn't make it wrong. As far as draw, I'd guess your timing is off, your forearm is not perpendicular to the cuestick at the strike, or you're not striking the CB as low as you think you are...as responsible for why your draw "sucks".
Scott Lee
www.poolknowledge.com