Explaining things

Explaining things Hi guys, I think I'm a mild stutter, but when I try to explain something to someone, i guess i get too excited about what i have to say and then i block profusely and i can't get many words out. It's not like you can substitute too many words when what you're trying to say is quite specific. This made me wonder how teachers with stutters do it and wanted to know from you guys or anyone else for that matter how you guys keep control of their emotions etc. Any help and tricks are welcomed!