Template overrides don't work that way. They are intended to override the view files only, not the entire module. The only files that you would be able to do the template override for would be in the /modules/mod_sclogin/tmpl directory.
To do what you are looking for, you'll want to create your own custom version of the module. So make a copy of all of those files, edit the mod_sclogin.xml file to have a different 'name' field, zip up the files and then install on your system. Then going forward, use your custom module instead of SCLogin. However, please remember that you'll have to manually add changes in our subsequent SCLogin module releases to your own module if applicable/necessary.
-Melissa
Template overrides for mod_sclogin -
