Here are some mini sketch notes on some random Wing Chun stuff. If you know, or have experience with WC, then you may already understand the details behind the moves, if not, then tough:).
From Left to Right:
Jut Sao: Great to draw opponent's arm in and has a clear line towards the center. It's also in a ready position to launch a punch, palm strike, biu (eye jab), and fung hao (throat chop)... my fave. Ends a fight in a second. No need to wrestle in the ground:).
Gum Da: One hand traps the other's elbow while the other strikes from the inside gate. The one pinning is only there temporarily and can stike after the other hand is clear. Think E. Honda from street fighter. Bam, bam, bam!!! Or bam, bam, fung hao... lights out! To correctly use it, one has to step in and pin. Both elbows should be down. Now wandering elbow kinda shit or you'd be using your arm muscles instead of your structure for power.
Jut, Bong, Tan: Just something I though of adding. There are a few types of Tans but I won't go into details incase my Sifu kicks my ass. There's an illustrated explanation in the bottom right though... just showing the basic usage of it and not the super detailed description on how to properly do it. Wing chun is an art that you have to feel and experience, otherwise, you'd be immitating it and will be chasing hands all the time.
Line of Attack: Top Right. Simply put, it's some of the lines of attacks. These principles are unique to Wing Chun since we fight square to the opponent as opposed to fighting one sided. Choosing a correct line of attack is crucial. Change your line of attack when there's resistance. Don't change for the heck of it though, or you'll create too many openings for the other guy to capitalise on. Keep it simple and direct.