i have writing paper with deckled edges.. i like the effect.

and homemade paper always has a deckled edge

grind up old paper (cloth, plant material, etc) in lots of water (in a blender, in small batches)
pour mess into large shallow basin. stir well before attempting to make a sheet of paper.

form paper on fine mesh that has been framed, (such as fine window screening stretched over canvas stretchers)

drain for a while (depends on temp and humidity) then dry on real wool felt. (sythetic isn't absorbent enough)

if desired, stack felt/paper/felt/paper..../felt between to large flat boards (exterior plywood works) and press (with wieghts) flat as it dries.

definately an outdoor activity!