Rinse all of your herbs and pat dry with a towel. Lay them in a single layer on a baking sheet and preheat oven to 200 degrees.
Place the baking sheet in the oven until herbs are dry and crumbly to touch. I left these in about 40 minutes. You will have to adjust this according to your herbs/baking sheet etc.
When it is thoroughly dry, start to crumble the leaves with your fingers. The herbs will literally fall apart at your touch.