This tutorial shows how To Make a Double Ninja Star Origami using two 11" x 8.5" paper size
Step 1: Get Two Sheets of 8.5 X 11 Paper.
Step 2: Put the Paper in a Landscape Position and Fold It in Half Sideways
Step 3: Unfold the Paper Back and Cut It in Half Along the Crease
Step 4: Take One Piece of Paper That You Just Cut. Put It in a Portrait Position Then Fold It in Half Sideways
Step 5: Unfold the Paper Back Again. Cut It in Half Along the Crease
Step 6: Repeat All the Steps for the Other 8.5 X 11 Paper
Step 7: Take Two Pieces and Put Them in a Landscape Position. Fold Them Both in Half Sideways Take Your Folded Pieces of Paper. on Each One, Fold the Right Corner Up Until the Bottom Reaches the Crease
Step 8: Fold the Top Right Corner Diagonally. Doing This and the Next Step Should Make a Triangle Shape
Step 9: Repeat Those Steps for the Remaining Three Pieces
Step 10: Take Three Pieces and Assemble Them As Shown Below
Fold the top right corner diagonally. Doing this and the next step should make a triangle shape. Fold the bottom left corner diagonally. Put the other piece of paper over the other piece of paper just like in the picture.Fold the first triangle over. Fold the second triangle over. Fold the third triangle over
Step 11: Add the Fourth Piece and Assemble It As Shown Below
Put the other piece of paper over the other three pieces just like in the picture. Fold the first triangle over. Fold the second triangle over. Fold the third triangle over.