Make a matching fold for the left side. Step 12 Fold stabilizers out to the sides. The stabilizers should look like this diagram. Step 14 Unfold stabilizers back down and make an inside-reverse fold out again. Step 15 Step 16 Step 15 Completion of inside-reverse fold for the stabilizers.
Book fold flap across center.
Step 16 Fold flap up on dashed line. The wing folds out like this diagram. Make a matching fold for the left side. The edges fold up as shown on this diagram. Both edges should look like this diagram.