first

open paint

step 1 open your picture


step 2 draf a few lines with your pincel or do some stripes not on the part that you wana save

step 3 go to the right south corner of the picture
and drag the sqoure to the size you want it to be

step 4 rotating

rotate it 180
now you can drag the sqoure also on the other side

final rotate it 180 agen this time so its in the good posision

than save at and go to the post an picture on the forum

it may work this time lol

good job