Husband experiences pain when I suck on his balls

Hi there,

I’m experiencing issues during oral sex with my husband. We both enjoy when I play with his balls with my mouth; however, I’m not too skilled in taking his balls in my mouth. When I attempt to suck on his balls, he experiences pain.

I’m wondering if others had any advice or techniques to do while performing this act in order to not induce pain for my husband.

Thanks!