Design a T-Shirt

I need the back of a T-shirt designed. The front to the shirt will just be our logo which is already done. Kaia is a fitness and nutrition program for women. It needs to incorporate my logo and a playful tagline "Kaia FIT Petaluma- Where Kaia Girls and Chickens Strut Their Stuff" I have sketched out stick figures of a Kaia Girl and a Chicken that I need creatively incorporated into the shirt design.