"Croquis" (rhymes with okie-dokie!) - is a fancy French word for sketch. They're great for expressing your ideas - sketching is a basic skill that can be learned, just like reading and writing. A little practice goes a long way!
My college project (above right) was drawn using a template on a light box. No light box? Tape your template to a window in daylight hours, tape to the TV at night! Pencil in the basic shape and add your clothing design. Use a fine line pen (I like 0.1!) to define your sketch. Erase original pencil lines and colour.
When I was in sixth grade our teacher made us stand up in front of the class to show our best drawing. I had to borrow a picture from a friend! Couldn't draw to save my life and avoided art at high school in favour of maths and physics (unbelievable!). But at age 27 I decided I wanted to learn to draw - it's never too late to start.
The life-changing book I read was Betty Edwards' Drawing on the Right Side of the Brain. For a totally left-brained person, it helped me learn a skill I thought was only for the chosen few!