Can I use my bitcoin debit card to buy designer shoes online?

I saw these super cute designer shoes on Etsy and while they're a bit too pricey for me to pay for them using traditional payments, but it didn't take me long before I realised that I can buy them using Bitcoin! I got a Bitcoin debit card the other day and I've been dying to use it. My only worry now is that I attempt to make the transaction and lose the crypto I just tried to use. How do I know whether the payment will work for a seller on Etsy, or any other online store for that matter? Tia