How to stop watery eyes...and??

Posting anonymously.

I've never really been good at giving oral.

Well, I did my best a few nights ago and my partner had the time of his life (so he said). He said it felt great and wanted more.

My question is how the hell do I stop my eyes from watering when doing deep throat? And how do I not gag?

OMG!! I feel crazy posting this but oh well.

I tried watching a few videos on how to perfect my skills and I guess I did okay but I didn't like the feeling of damn near choking.

Advice?