Moving to Shopify status report for those who were wondering...
OK, bought a URL: jewelryLK.com from GoDaddy
bought a shopify subscription
DSN forwarded my new URL to shopify
I kept my shapeways marketplace shop (after marking everything as not for sale, deleting the old shop name, adding the new shop name, putting back my commissions, and making all the product for sale again)
then
got a shopify format .csv file from shapeways customer service (thank you Mitchell Jetten and team)
got my questions about customer information answered (again thanks Mitchell)
successfully imported 40 products (907 material / size variants) into shopify
built a Shopify website storefront using a free template
added a separate Google tracking property code for the shopify site
So, still no sales, but here is my to do list now:
buy an email service that allows me to send and receive emails @mystorename and do double opt-in email list building
find out what happened to my 4 other products and get those moved to shopify
redo the shopify storefront to address user experience issues (maybe change template, maybe add code)
add some products to shopify that are not 3D printed (hand-made vitreous enamel cloisonne, maybe gems)
Whew, a lot of work for an old retired guy.