Here is a video showing a drift launch.
I'd be very careful as already said, about the lines snagging on something. And when he walks to the right of the kite, he has to make sure he is upwind of the lines.
I've drift launched by unwrapping the lines with a Xbow IDS, but there are many things which can go wrong and probably will.
After trying a few times with mixed results, I'm not a fan of drift launching and would use an anchor launch system with a floating rope tied round a rock instead if it possible to set that up. Polyethylene rope floats.
Having said all that, it is very very risky for a beginner to self launch by any method and you should try to kite with other kiters and get an assisted launch until you develop some skill. As a beginner, if something goes wrong, you wont know how to sort it.