So I developed some amazing print on demand products from numerous different companies because they don’t all offer everything. I have five sites that I have items on and I just thought I could integrate them into my website. I started on Shopify and cannot figure out any of the same or how to use them or how to make what I want. I went to  hostinger was able to create my website. Now I find out that none of my sites integrate with hostinger   so I tried to download that website and upload it into Shopify as a theme but it’s missing the layout liquid file. Whatever that is. 
I get my website somewhere that all of these places will integrate with?. here is my site

 

 here is my site .https://jojoandsloan.builder-preview.com/