I'd like it to be of her face down with her soles facing the camera, and her ankles and toes tied together so she can't move those lucious feet. Then, I want you to torture those bad boys!
Fingertips? Use 'em. Scribbling with your nails? Do it. Use the bristled hairbrush, as well as a toothbrush (electric if you have one) going across her soles and in between each little piggy, making her squeal with delight. I would like for her soles to be oiled up too, to enhance the ticklishness. Thanks.