To line your custom envelope with DSP, simply measure from the point on the sealing flap to the center of the notch on that same side of the envelope. In this case it measured 3 1/2". So I cut a piece of DSP 3 1/2" square and placed it in the Envelope Punch Board lining it up 1/8" smaller than the 3 1/2". Punch, then flip the paper, (pull the paper toward you like you were playing cards and carefully looking at the card the dealer just gave you, but completely turn the paper over). Turn it 1/4 turn to the right, line it up at the same mark and punch again. You should have punched opposite corners. This piece of paper will fit perfectly onto your envelope flap. So simple and you can use this technique for any size envelope!
Stamp Set: Starburst Sayings (133182w, 133185c) Celebrate the Everyday Catalog
Cardstock: Summer Starfruit, Whisper White, Bermuda Bay
Ink: Strawberry Slush
Tools: Big Shot (113439), Starburst Framelits Dies (132967) Celebrate the Everyday Catalog, Circles Collection Dies (130911)
Other: Dimensionals (104430)