Paper Glider

Step 4 The Inside Fold

This Fold It's Easier Then It Appears
First, Try To join Points A And B ,Crease
Then , B With C, Crease
And, A With D , Crease
Fairly Easy isnt It
Should Look like In The 3rd Photo

If They're Problems, Use The Photos For Visual Aid
Look The Result in The Third And Fourth Photo

For Finishing Draw A Small line In The Crease of The First Fold ( A-B )
Should Look like In The fifth Photo

So Do it