how to do mom test with new people, a community ['Reddit'] without being looks like a fool or spammy

Hi, How To validate your ideas I recently sell my freelancing project for which I charged 200$.

But "I think which won't make it good enough" there is a good opportunity for this how I validate it. I want to build SaaS around this.

how I should ask on Reddit or any other community how I should draft my post. I try to post on that community for the first time and I don't want to look spammy.

I am new with Reddit and Indi Hacking, please help

TL: DR
how to do mom test with new people, a community ['Reddit'] without being looks like a fool or spammy