The Photo Gift review for Shopify Forms

So far so good except... 1.as other's have said, it takes up a lot of space (on mobile... it covers the whole screen, If I see that when I'm shopping I just leave... 2. I can't figure out a way to link to it (or duplicate it for a page to link to it from an email. (using for marketing email sign up form- but I'd like to put a link in my email signature and can't figure out how to do that I've tried googling etc but no info anywhere) Maybe there's some instructions that I'm not seeing or understanding?