I think it was just a visual thing when reopening the site and it says my selected model above my skin and it is currently Slim. I do not know why I had such a problem changing the model before. I'll see if it actually changed now.
I was using a Slim skin for the longest time but at some point my model got changed back to being the Classic model for whatever reason, and the site will not let me swap back to the Slim model, every time I select it and choose my skin, the only "confirm" on the page that occurs is when you choose file and there's no confirm for when you select models, then clicking upload and it updates your skin, yet selecting the Slim model in this moment doesn't stick and when you log on to your account or reopen the minecraft.net site it'll be back on the Classic model rather than Slim.
Is there any official email I can send a message to questioning this problem? It's always so hard trying to find one searching through their help information. I gave it another 5 seconds to look and found it instantly.
Also, why is it so hard to find a template for the slim model? I've searched for so long trying to find a pixel by pixel template which is very easy for the Classic model but I can't find a single one for the Slim to help me make a skin. I do not want to use the extremely irritating and clunky skin creation sites, as well as I wouldn't be able to with some of the things I'd want to do.