Looking for a UI/Graphic designer for recurring projects on hourly basis

As of Now I need a UI/graphic designer who can work on hourly basis and can work as per my instructions to change UI of a screen, create new ui screens & edit graphic/promotional materials/ Ad banners and so on. I shall instruct you with everything required. If I am satisfied with the quality of work you will be getting lot of work every month from me. Pls send your hourly rate with your portfolio on what you have worked in the past. Photoshop & Indesign is a must. Thanks