Make changes to the magento2.0 create account -- 4

Make changesto the signup and login modules of magento2.1.0. Fasttun around needed as its very urgent. You should not modify the core files of magento instead should be skilled to override the existing classes and write new. More details to the skillful bidder. i tried to override [login to view URL] but not able to i copied it to public_html/app/design/frontend/Magento/luma/Magento_Custome‌​r/templates/widget/n‌​[login to view URL] some one who can tell me quickly what mistake i made then i can hire you on the other tasks please