In recent years, "sparkler send-offs" have become a popular alternative to showering couples with rice or birdseed.
"I had a handful of sparklers when the bride and groom appeared in the doorway," Mullins told BuzzFeed Life.
"The only things I remember about it was a very hot and bright flash close to my face and a searing pain in my hand," he said.
Once the couple had made their exit, Mullins ran to the bathroom to put cold water on his hand...and realized that his fingers were charred.
Doctors treated Mullins' second- and third-degree burns and tendon damage by healing and then "debriding" the wounds.
After six weeks of recovery, Mullins was able to start working again. At that point, he could only hold the camera for about two hours at a time.
But Mullins does have some advice for couples thinking of doing a sparkler send-off: Get the right sparklers.