Is there an easy way to mirror or repeat that type of shark tooth pattern around a boarder? or even if you just did a repeating wave pattern. If manual line drawing is it then totally cool with that but wondering if a tool or that mirror function maybe?
Also… Just watched Don P make a video on basically doing open chain. I’m guessing I’d need to do open chain on those individual lines to make a tab bend properly? However it does seem like in the drawing they just did open chain rectangle and just bent it up for the bottle top.
Watching this seems like wizard science. Learned a lot and will probably watch 10 times to start absorbing all the functionality you used in this short clip!
I know this is about an entirely different thing with your sketch (unrelated to what you asked):
You could borrow the drawing on FireShare and make and opening like “Shopping cart key(quarter) and bottle opener” by David Saul. Just use the open space in your drawing and use the actual bottle opening area. You would have extra space to give the customer instructions like “Opener.”
Mount the sign with a spacing sufficient for the bottle cap to be engaged.
Really wanted to reiterate how much I appreciate the video and also seeing some of the sheet metal functionality which I hadn’t even seen used. This was a great tutorial and the fact you posted the work is amazing. Thank you very much.
After having made a few small bottle openers, I’d advise minimum of 16 gauge. 14 gauge would be ideal for strength but may require a beveled edge to be added.
I keep trying to change the bottle opener, for some reason. This might be frowned on from this crowd but perhaps take the best of each materials for your sign (sheet metal and cast metal). Pop rivet one of these on your sign:
Five minutes to go! 
I’ll look at grinding down the edge some to catch the tab. Many thanks!
