Made the aircraft from PAPER

Prepare MEASUREMENT PAPER of 21CM X 29,7 CM
THEN the FOLD became two
Be AGAIN opened, FURTHERMORE the MENYILANG FOLD /\ to the middle of PAPER, SO AS to become the triangle,After THAT the FOLD AGAIN under the POSITION of the triangle TO was inside out \/.The FOLD, EQUALLY PRECISELY/\, BUT the POSITION NOT the ELBOW.After THAT, the KEY with FIRST ELBOW.
Please tried...