ZeRoGravity

...Or you can go to a photocopying center blow it up to the size you want then bold in the lines (6B), flip the paper over, tape the edges with non stick tape, press down (shade) using a pencil where ever you can see the lines. After that you will see a ghostly image of your transfered line art. 15 mins or less. If you don't want it to look "backwards" do the step vice versa.

Shading the your drawings comes after. I suggest you cover your drawing with transparent paper and test out the shading before actually doing it on your art. Helps a lot.