Playful Login / Register Screens

Hi dribbblers,
I've just executed some playful Login / Signup Screens for iphone. You can see & purchase these screens with four different color variations at this link:
http://graphicriver.net/item/creative-mobile-login-app/7232822?WT.ac=search_thumb&WT.oss_phrase=mindart50&WT.oss_rank=2&WT.z_author=mindart50

ps: I've no copyrights of the icon used in these screens. It has just taken from Duolingo and used as a dummy icon in the screens.

Checkout @2x as well. Have a nice time ahead. Thanks!