Play around with your grip and stance. Since your body proportions are undoubtedly different than mine, my technique will not necessarily work for you.
I try to keep neutral spine, i.e. im not looking straight ahead, nor down; my neck is in perfect alignment with my back.
I pull supinated with my hands fairly normally spaced apart (width of torso)
The bar starts directly over my toes. Any closer than that and I will pull along my shins, any farther and my form goes to crap. Also, breaking your lift down into pulling phases really helps in the beginning.
phase 1) weight is on the floor; push through the heels with your legs, hips and shoulders rise together. Bar raises past knees at which point you switch to phase 2.
Phase 2) bar is coming past your knees. Throw your hips forward explosively, pulling your shoulder blades together and down.
The real problem comes about when people try to put the weight down I think. im most likely to scrape on the way down than on the way up. This can be avoided by conciously bending at the hips before bending the knees. This allows the bar to swing away from your legs enough to provide clearance.