I have your clothes lookin' like they was designed by bullet holes and shoe prints

from Slaughterhouse – Microphone Lyrics 1 on Rap Genius

Meaning

His style of choice for the clothes he designs for his enemies is one he creates through the use of
1) shooting the clothes
2) stomping on the clothes (probably with Timberland boots). I imagine that he creates this design while the material is draped on the live model (i.e. his enemies)

To help improve the meaning of these lyrics, visit "Microphone" by Slaughterhouse Lyrics 1 and leave a comment on the lyrics box