Anyone know how to capture

While I watched Paige as I held her, she was "talking" to me and when I looked into her eyes to say hi back, I noticed the reflection of the Christmas tree lights in her eyes. Now, burned into my memory are the tiny multicoloured sparkles that made her eyes twinkle. How do I capture that on the camera? I need to take a mechanics of photography course so I can at least know how to TRY to take those shots...speaking pf phtos, anyone out there available to come over tomorrow (thursday dec 4) and take some shots of us?