Four pages from a proverbs dictionary and a few moments at the sewing machine…
glue pairs of pages together at the very edges (so you don’t get glue on the needle later on)
trim one set down by about a third for the front and chamfer the edges of the back set so you can later fold it over
if decorating now is the time to stamp or stick, here I stamped in black then outlined with distress crayon which makes it look layered
sew across the top of the shorter front piece, clip front and back together (don’t pin or you will make holes) then sew all the way around the edge
now fold over the flap
when you have filled the envelope you can seal with double sided tape or a glue dot as you choose