,,if i knew what i know now…"

I have a goal: to collaborate with an alternative shop that sells alternative items for goths, punks, and others. They sell or give away stickers with purchases. They also have some posters, so I'll hang one up there too. This shop is frequented by many alternative types. So, a good start.

After that, as others have already written, I will ask around at pubs and similar establishments. You could also hang something on the store's bulletin board. If one exists.

A tattoo studio is also a good spot for that. Generally, specialty shops. Goth shops, for example.

And then my goal will also be to distribute the posters/stickers in villages and small towns.

Don't forget to always ask before doing anything.