Sketching ideas in a drawing notebook as they come to you is a great way to enhance your creativity. Sometimes I use markers or crayons to put color in the drawing and then write the concept that I am looking for. This is how I start the process to create a new series of paintings or just one painting.
I carry a notebook with me at all times so that when the inspiration hits (and one never knows when this will happen), I have the idea on paper -- then I find the model to create it, take photos and then paint either from life (my preference) or from the photos.
Sketching from memory is a great way to get your drawing skills working and it is fun!
This sketch started an entire series of “The Red Dress” paintings!
As a Painter, I am always striving to learn and try new techniques.