Here's the back of the envelope...
Envelope fold option 1...
Envelope fold option 2...
Envelope fold option 3...
Envelope fold option 4...
Envelope opened...
The 4 Neenah sacred geometry cut-outs together...
Hand-cut Neenah Paper sacred geometry #1 (80 lb ESSE CVR White Texture)
Hand-cut Neenah Paper sacred geometry #2 (28 lb UV Ultra II Digital Cover Radiant White Smooth Digital)
Hand-cut Neenah Paper sacred geometry #3 (100 lb Classic Crest Digital Cover Classic Natural White Stipple Digital)
Hand-cut Neenah Paper sacred geometry #4 (80 lb Royal Sundance Digital Cover 100 PC White Felt Digital)
And here's the envelope unfolded...