i ruined it. i wanted it to look like yours lol.. the front and back was cut in the same shape so i just lined the entire top with fabric to make a trim and connected the points with elastics, i also but a piece of elastic on the back to connect the two shoulder straps, it didn't have enough support and that connection did the trick.

Hey I tried another one, just had scrap weird colour that happened to go with the bullet ring, didn't line the arm pits, pretty neatooooo!