Somebody give me tips on swallowing

I give my husband blow jobs but never let him cum in my mouth. Years ago he accidentally came in my mouth and I gagged and threw up and didn’t like the taste. I was terrified after that. Lately it’s something I really want to try. Any tips on how to ease my nerves? I want to try swallowing but don’t want to gag. I been messing with him about wanting to swallow and it seems to excite him so I want to give it a try.

I am too shy to post this non anonymous 😅😅

Update: thank you ladies ! I will try those tips. I’ll have to make sure he eats good beforehand. 🙂