Over the last year, in order to promote shows online, I’ve been making ‘posters’ to attach to invitations and to post on facebook. I would find an image or images on the internet appropriate to the venue, print it out on 8 1/2 x 11 paper and scrawl the details of the show usually with a Sharpie marker. Not complicated but it’s been kind of fun. See some examples below:
Philip Lynch Music 
These are fantastic. Don’t stop, make more!
I admire your lettering skills. I always like to do custom lettering for posters but it takes me a very long time.