Seller account creation in Wordpress Ecommerce website

e are building a platform ([login to view URL]) where any artist can create an account in our site and upload their arts. After that, they would be able to embed their art with products such as Men Tshirts, Women Tshirts, Phone Covers, and Mugs (More products will be added later). Moreover, they should be able to choose, on which product they would like to embed their arts too. Currently, the website I have is a normal ecommerce site where a buyer can create an account and buy a product. Our final goal is to have an ecommerce platform where an artist can upload their arts, embed their arts with the products we have and then, can publish the arts embedded with our products to sell in it our site. A similar example could be seen in the website [login to view URL], and [login to view URL] . Please go through these website thoroughly in order to have a clear understanding. We have divided this project in two parts. First part’s feature is discussed below: 1. The option for people to create an account or sign up as an artist with username & password and upload their arts in PNG format in their profile. The layout of the profile will be provided after agreeing. Their arts should be visible on their profile and shouldn't appear in the shop section of the website as of now. Publishing in shop section will be discussed in part two. So, for now, we are giving the artist the chance to publish their work on our site. That’s all. (In part two of this project we will build a tool with which the artist can embed their arts with our products, add their commission to the base price of the product and then those embedded products will appear in the shop section with the total price so that buyers can buy those art-embedded product) 2. Notice that the site is in the domain www.blog.harah7.com. Once we finish the full project we will transfer the site in the domain [login to view URL] . So keep this in mind when working. 3. The speed of the site is extremely slow, we will have to improve the speed drastically. Keep this factor in mind as well when working. 4. We need to have a copy of all the codes that you will write. Moreover, when anyone signs up as an artist, we should get a notification in our email or MailChimp and the link for the artist profile should be like this: [login to view URL] so that once we move to our domain the link appears like this: [login to view URL]