Not bad. You should be wearing long pants as you will want the against you shins when you are pulling.
Scraping the shins is painful. Some people claim they could pull more by dragging it against their shins, but just keep it close enough to your shins without scraping them with the barbell.
Also drive your hips into the bar as you ascend. Some pro's say to start driving the hips forward when the bar reaches knee height, I like to do it throughout the lift, but anyways try and see what works best for you.