Hello,
I believe I'm more than qualified for this task, because I've designed many t-shirts, logos and graphics in general.
I will use Adobe suite - Photoshop and Illustrator.
I will need some additional info from you, though: what do you want it to look like, what color should the t-shirt be, what should the writing be...
Feel free to contact me for any additional info, I will be happy to answer all of your questions, and even provide sketches.