I apply my ink with a brush, as though it is paint and then wipe it very carefully with tissue and sometimes scrim.  This is the part I love the most, getting the inking right is always time consuming but worth it when it works.  Once enough ink has been removed to allow printing, the plate is put face up on the printing press bed, damp paper goes on top and then newsprint and blankets.  It  passes between the rollers of the press and then there is the all exciting "reveal".  Sometimes wonderful, sometimes bad!  I love the unpredictability of the process and try to make my collagraphs stand out from the crowd by masking small details with paper.  These areas don't print and allow me to add the detail with watercolour.