Designer required to design Prestashop themes

Hi, I am looking for a designer to design Prestashop themes with me on regular basis. i) Designer should have previous experience in designing Prestashop themes. ii) Designers will be responsible to design clean/creative unique designs as per the Prestashop structure. iii) Designer must provide 3 version of design that will be reviewed. iv) All work should be 100% original should not be copied from somewhere else. This will be an ongoing job. Kindly arrange to share best of your portfolios.