Please help me with an Aviator parrot harness

Hi, I was hoping someone could help me with the aviator harness. Again, I had to go out and buy a new one because I couldn't find the other one. And I'm having the same problems. It's not tight enough. This is far too long to be practical. I have to bunch it all up if I want her on my shoulder. I can't tighten it without pinching her feathers. She screams bloody murder when I'm putting it on her. In the pictures, the birds all look like it's nice and snug. I can't do that without pinching into her feathers. Athena, no. Come on. I genuinely do not understand what's going on. I used to have, when she was little, I had a harness that had a clasp on the front and the back. And you just attached a leash to that. Having it on all the time just seems horribly impractical. Can someone help me? What am I doing wrong? Am I doing anything wrong? Is it just that these harnesses are made stupid? Just please let me know.