When the attacker is trying to hit you, you should punish their strike.

Your defense when dealing with wide angles should typically originate from the center out. This is a very Wing Chun approach.

When bringing your elbow down to protect your low line and kidneys you can add an extra layer of protection by bringing your hip up to the elbow.

You should follow up with counters after finishing a defense such as the video shows on the catchers mitt.