Hello
When I first started making my picks they were huge, I mean massive I could get it in the door lock but it was lifting the pins too far.
In my opinion the best way to get a feeling of what they look like is to get a set or a pick for you. Don’t give up because you don’t have a credit card because I didn’t and I am still purchasing sets from other members of this forum.
Just use your brain and think about how big you think it should be or learn the way I did I started making huge picks then realized I should make them smaller, then smaller, and finally to around the proper size. The templates around this site should help you out with the length and width and stuff like that.
Hope that helps and goodluck
Geek