I have a technique this time.
Apply grunge paste through a stencil; ink up a script stamp with black and red ink; stamp into the wet paste. Remove the stencil, Leave it to dry. Color the background with some Nuance, sprayinks or watercolor. ( I've used Twinkling H2o watercolors).
Finish it off with a fussycut stamped image.
Finish it off with a fussycut stamped image.
On this ATC the background has been stamped into, just as on the card, but without inking up the script stamp. Finish it off with a fussycut stamped and colored image and some transparent tape, or washi tape.
Try this technique, it always makes for a beautiful background!!
Magenta products used: