A few techniques practiced:
- laying color down with the side of the pastel
- letting the color of the paper "break through" with one coat of pastel
- layering colors for a more opaque look
- using the tip of the pastel to draw thinner lines
- using the side of the tip to draw a broader lines
- adding details at the end (after all the color has been layed down) to leave opaque marks
- blending colors with fingers or a napkin
- keeping the side of the hand up while working to help prevent smudging