These worked better there was more image on the screen Even though i did two pulls I was using a 150-mesh screen so I needed to pay more attention to a stronger pressure and the angle I held the squeegee at, the skill slowly returns! I do like their there/not there quality.
I may try digitally printing the images, after playing with them in Photoshop and maybe doing them as much smaller images or even much larger, more pixellated images, I wonder which would emphasise fragility?