
Sometimes you can use the paper to your advantage.
In this example, the corner of part B where the shoulder meets the torso is coming loose, because both the glueing tabs from part A and part C are
underneath part B.
Because part B has to be curved, there is a lot of tension in it, causing the paper to rip itself loose (it wants to be flat again).
If you switch the glueing tab at the front so that the glueing tab is on part B and
underneath part C, it will press against the backside of part C but will have nowhere to go, so it can't rip itself loose anymore.
Alternatively, you can also do a better job glueing the parts together. ;o)