Your Skype ID will automatically appear in the Username field and will be used as your SkyPrivate Username. (which, as stated above is crucial in order for the plugin to work) Then, fill in the password and click on the "Sign Up" button.
Then, check your e-mail inbox that is linked to your SkyPrivate account and confirm your e-mail address (the one used for creating the SkyPrivate account).
Now you will be able to login to your SkyPrivate account.
Finalize your registration by filling in your personal information.
After clicking "Continue", select the Model Account Type.