Autocad Drawings of Garden/Storage Shed Plans Needed

Hi I am looking for some shed plans to be drawn up for sale on my website. Shed plans needed would include a lean to shed, a 10 x 12 garden shed, a saltbox shed and a gambrel shed. I would like to provide step by step instructions and illustrations together with good, detailed drawings. If necessary I will supply plans to be copied but I would prefer the plans to be original. I am open to suggestions as to the best way to proceed. If job is satisfactory there will be plenty more drawings needed for pole barns etc. Terry