Unmold jelly onto plate. Split 2 cookies in half. Add 2 cookie halves to jelly for the jack-o'-lantern's eyes. Cut remaining 2 cookie halves into 3 triangles each. Top jelly with 1 triangle for the nose; add remaining cookie triangles for the mouth. Stack remaining cookies into 2 piles of 3 cookies each. Place on jelly as shown in photo for the pumpkin's stem.