If "Twiszip" is a character from a story or a specific step in a complex model (like a 3D puzzle), please share a few more details so I can give you the exact steps!
Slide the pointed end of a second unit into the pocket of the first. Part 3- Twiszip
Continue "zipping" the units together until you have a 3D cube. Each corner should have three units meeting, forming a stable "twist." If "Twiszip" is a character from a story
6 square pieces of paper (origami paper or post-it notes work great). Different colors for a more vibrant look. Initial Fold : Fold your square in half, then unfold. Each corner should have three units meeting, forming
: Tuck these triangular flaps underneath the "door" flaps you created in step 2. This "zips" the unit shut.
: Fold the top and bottom edges to the center crease.
If you are looking to make a paper project involving "twisting" and "zipping" (which the name suggests), How to Make a Modular "Twist-Zip" Cube