Be sure and use a heat gun or hair dryer .right after you spray it on , It will give you a uniform crinkle . experiment a little before you do the real thing . You can get excellent results . Dean
Some wrinkle paints can be very touchy to get the wrinkle even. Heat lamps work well, what you need is an even heat across the panel that is sprayed. That will give you a consistent wrinkle pattern. If the part is small enough you can put it in an oven. I suppose all brands are a little different, I agree with the last guy, do some test panels and fine tune the heat application.
For small parts Krylon used to. I think Tempo still does.For big jobs if powder coat is offered go that way Keep in mind powder coat gets thick and goes in places you might not want like countersunk wholes or any tight tolerance wholes where the net whole size is needed. Understand all you can with that process.