Sometimes an artist will attempt printing the plate a second time, and can get a "ghost" image from the residual ink. This ghost print is still considered a one-of-a-kind print, since it is much lighter and therefore different from the first print. Sometimes I will use these ghost prints as the starting point for my next piece, and will combine other forms of printmaking or mixed media to form entirely new images.
Monotype is perhaps the most versatile of printmaking techniques. Apart from it's ability to combine with any of the other styles of printmaking, there are many different techniques within monotype that allow for endless creative possibilities. Also known as "the painterly print", Monotypes can be very painterly and spontaneous.
I use oil based inks and both additive and reductive techniques for ink application (as in the print above). Sometimes I combine oil based inks with water based crayons (also in the print above), or different viscosities of ink to repel or attract each other. The use of stencils and masks, chine colle (Asian paper collaged onto the print while it is run through the press), and multiple plate printing can also be used to different effects. Other monotype techniques I use are pastel or charcoal transfer, and the use of photocopy gum transfers.