Design a T-Shirt for apparel company

Being an up and coming apparel company in Australia, we have been blown away with the response to starting our new clothing label. We are looking for a graphic designer to assist with design of apparel including shirts, singlets, shorts etc, in line with our concept sketches. All details such as logos, colours, effects will be provided, we require a graphic designer to convert the concept into an Illustrator file. Work will need to be created in Adobe Illustrator and all images will need to be vector. The stream of work will be steady, and we are hoping to build a long relation ship. Templates can be provide, but actual details for the design will be up to the designer to create from the concept sketches provided. If you are considering submitting a proposal, please provide a price for design per top shirt. Price is a large factor for us and a competitive proposal will work within our budget. As mentioned this will be a long stream of design work. Along with competitive pricing, a quick turn around time will also be looked upon favorably as will a previous portfolio with similar experience. Thanks