Jerry, I think either sentence will serve your need with equal effect.

I usually say (if pews presenting verbally) - do you have any questions? And in written form - please contact me if you have any questions. Only because I want to give room for more that one question, but as previous person explained, I think both your versions are fine to use

Svp je veux demanded des questions Exemple: Quelle est la difference entre “elle a toute sa tete” et “elle a garde toute sa tete”. Jouir de tous ses facultes mentales