How to create an affiliate link for a search using keywords

[Mistica]

Here is an example:
https://www.zazzle.com/store/annarosaenergyartist/products?qs=italy%20golf%20balls&dp=25269603245159...

I would like to add my affiliate code as well as tracking.

two(?)  keywords are italy and golf balls.

[waterart]

If there is a question mark in the url then I think you add this & between the end of url and your referral code