Create some simple CAD models based on my sketches

I require someone to create some 3d models from some sketches I will prepare. There will be one main model with one or two variants. The CAD models need to be rendered so that they can easily be understood by others and I also require them in a format ready for 3d printing. They will be simple models and shouldn't take more an an hour or so to complete by someone who knows what they're doing. When applying for this project please include examples of recently completed & rendered work as well as a short summary of your experience of 3d modelling and printing.