[Heathkit] SB cabinet repaint question?

[OTAKEBI at aol.com]

I picked up a Heathkit speaker SB-600 to match my SB-303 SB-401 station.
The cabinet was ruff and I am now ready to repaint after prep.
I will be going to Sherwin Williams in the AM to pick up some paint. 
After they do a computer match of the original paint I will be spraying the 
reconditioned cabinet.
What I need to know is of any trick you all may use to duplicate the crinkle 
on the cabinet.
On about 3 areas I had to go to the metal and those areas are now smooth.
I was thinking of using a foam brush when I spray some primer on those areas 
to try and duplicate the crinkle.
But, I thought I would ask the guys here first.
Could be you all have a better way.
Most of the cabinet still has the original finish so I only need to recrinkle 
those 3 small areas.
Thanks in advance,
Dan/N4VET