I know this is a really old topic, but I use this website called "needcoolshoes" It is compatible with 1.8 skins and can be used to make 1.8 skins (I tried to make 1.8 skins using a template, but it did NOT work, I found this and it was a lifesaver. well sorta.) Anyway, here's the link if you want to use it! http://www.needcoolshoes.com/ (someone else may have already said this but I don't want to check 164 pages...)
i do not enjoy this skin editor/creator it rarely accepts a skin you have downloaded, and even more rarely can actually save your skin after making it..
i made a skin late night for myself and it took me a good hour. then guess what? it wouldn't save. no matter how many times i tried it never worked and then the next day i tried to edit someone else's skin and even though the format should have worked the right way it wouldn't load it all this is is errors.