How do I make burning cloth effect

So I want to make a battle game like battlefield 1, and i had no idea how to make a burning envelope on a zeppelin, could someone tell me if it’s even possible, if so, how can i do it
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I’d help you but it’s hard to understand what you are trying to achieve.

What do you mean by “burning envelope”? Like a literal envelope?

If the answer is yes, I can help you.

You would use third party software and there’s multiple ways to do it.

Though it’s not the best option in general but it is an option, and it’s free. Use a picture of a burning envelope and edit it in Gimp(free Photoshop type software).

if you want curtains or the similar, it’d be best to use blender. You can use Gimp to texture it the hard way, or you can figure out an easier way to texture it.