I think you are doing everything right, just need to worry less about paralysis by analysis and start doing more. The internet has a permanent memory but a short attention span. Plenty of time to test, adjust and adapt, with minor mistakes forgotten for the most part, soon enough.

You can learn more about Minnow Support by joining the discord: https://discord.gg/kNxM7T6

Digging around in @minnowsupport, and via other peoples posts with the tags #minnowsupport or #minnowsupportproject

And soon on the two websites we are wrapping up this week, one of which is

(MSP Web Home)
and the other is

(home of the MSP Waves Radio Network)http://minnowsupportproject.org http://mspwaves.com

I don't really do any other communities. MSP is the largest steemit discord and probably the largest steemit subcommunity, actually, with over 3000 members. It keeps me plenty busy enough.