How to format registration screen and widget

Hi - I'm trying to style the registration login to follow my theme as attached. The buttons are easy enough to do with a bit of css, but how can I make the Password input field look the same as the Username input field?

Also, everything seems to center in the page and I'd like it aligned left.

Site has already been given support access: http://digicommarketing.co.uk/register/

Could really do with some help on this.

Thanks
Dan