Your domain's CNAME record doesn't point to Shopify

This message " Your domain’s CNAME record doesn’t point to Shopify" was listed by Shopify as needing attention.

It instructs : Open your domain provider’s DNS settings for domain address and set its CNAME record to shops dot myshopify dot com.

Can somebody please do me a big favour and give me a step by step/detailed guide to update our DNS settings on Cloudflare.

Thanking you in advance.

Regards,

Peter