I looked at a bunch of different flames and then I decided to make it mine and drew out a bunch and stood over my buddies shoulder nearly drove him crazy...all the way through the process. I learned a lot, like how to lay tape, and how much work goes into a decent paint job, good thing my painter and I are friends...
just type flame templates in a google search. Admittedly I may have gone a little flame crazy...

 

a friend had light green metalflake flames painted on a dark green metalflake background. It really looks good. Good luck with them

 

I layed mine out with freehand with fine line tape. I probably spent 6 hours taping and masking trying to get it exactly how I wanted them.

 

Unless you were being facetious...why even post this?

 

Look at the pic in his signature ...

 

I have used a sign shop that makes vinyl signs as they have a computer program that they just pick a flame design and download it to a sheet and I trace off of that.

 

Because Big Sky knows, some people love the flames and some say there outdated. We how ever love them regardless of the era.

 

On bike tins, it is almost impossible to use a stencil. PM me and I will guide you through the whole process of laying out your desing using fine line tape. You will have a much cleaner job doing it that way. I'm a custom painter and can help you start to finish.

 

Yes you can get true fire templates online. Check out Mike Lavallee/Killer Paint Airbrush Studio. Best to start with templates like that until you develop the flair for freehand.

You can also get stretch mask for use on compound curves like like tins.

 

I'm adding flames to my bike also. Just got my tins last week, and gonna install them sometime this week.......