Here is the template used for the Bankless DAO community call POAPs, with a modification for local chapter meetups. You are free to modify and use this however you wish, if you should find it helpful when creating your own POAPs.
Note: You do not have to use it, you are free to create whatever style you like for your POAPs.
.PSD template download: https://siasky.net/_BlIDnN1BTdyXcTYyIUrEQVwEme0hBT86EwEAQ2G-nQyrw (note: If you do not have Photoshop you can use the amazing https://www.photopea.com/ in your browser)
There is also an animated POAP template in our Digital Asset Manager (BrightDASH) - https://bankless.brightdash.app/browse/f7a9eecd-dc65-4afb-a14b-fee02683135b with a video layer - You can replace the video file with any other animated layer and then output to aPNG file