Direct another web address to our site and format a specifc products listing page

We are Pony Lane, on online homewares shop using shopify for our website platform. Our website is [login to view URL] We have a stockists under the name of 'craft me up' who has brought the domain name of [login to view URL] We are hoping to use that domain name to direct to a specific page on our Pony Lane shop. I was going to do this myself but then came across some articles that mentioned that it could be bad for SEO and that google may remove your websites from their index. I also found this article that talks about doing it as a '301 redirect' [login to view URL] So I decided it was to hard for me and should get some expert help! We are looking to engage someone to link the domain name to our website for us (so it's done in the correct way)? Also what we are hoping to do is to get it to link to the 'craft me up collection' [login to view URL] but reformat this page so we can have a blurb at the top about who Craft Me Up and it's logo. Whilst still having the product listings below. Also it would be ideal if we could change the address that shows in the address bar so it's a bit tidier. Not sure how this is best achieved but hoping it's something you can advise on.