Here is cool device that will fit your light head- mine is a speedotron shown here- that is a 7" reflector, ( so if you have same) this will fit.
designed for 7" reflector, industry standard... so it works with your strobes- in that the pattern you select that is what show up on the pic!
** This is OG 1980's. .... Charles Lewis came up with this extraordinary device... 
7 different effects here, the front piece has a lens in there, that is the key to focus & give that background *& Image a unique look..
this is a great piece for the fashion photographer, the OG piece is from the 80"s...
nice reasonable way for you to give your shots a great new look....!
 * check out some more of his Techniques..quite impressive...
Tried to describe the best way, some experimenting is required here. *also you must have strobes to get the full effect. oK