(works only on computers, not on mobile devices)
Payments to Happy Feet Studio are made on PayPal, but you do not need to own a PayPal account to pay. You can enter your credit card info directly at PayPal and complete your payment - just like paying in any online shop. You won't have to register a PayPal account.
(Note that this option is only available on a computer, not on mobile devices.)
Once you get redirected to PayPal, just do as follows:
Address, email & phone number will also be requested
(this is always necessary when making online payments).
And click the "No, thanks" button if you don't want to create a PayPal account.