T-shirt and mug design

I am looking for someone to do some t-shirt and mug logo designs for my website, We Love Accents.
I have some initial ideas for some designs, but I need someone with a better artistic/design eye than me to turn those ideas into some nice/slick looking t-shirt and mug designs.
I need some high quality images producing that can be directly printed onto t-shirts and mugs (I have a company who will be producing and dispatching the t-shirts and mugs for me) plus I will also need some smaller slick t-shirt images to display in my online shop, so customers can browse the designs on offer.
Possibly if there's a way to take a 3-D still of a plain white t-shirt and a plain white mug and then superimpose the logos on those images that might look very slick (if that is possible ?)