If you aren’t afraid of New Year photoshoot ideas that bring some mess to your house, you can try throwing confetti up in the air and capturing this magical moment. When doing so, you can either look right in the camera or trace confetti while it is falling down. A person taking photos should set a shutter speed to 1/200 and use a lower aperture (around f/2.8) for the best outcome.
Alternatively, you can ask 2 other people to throw confetti in the air around the model, so he/she can fully enjoy the moment and feel relaxed rather than stay concentrated on colorful pieces. Thus, you have more chances to see genuine emotions and a non-awkward face.
Based on my experience, it’s better to have a person on each side who will throw confetti without many poses, so when the first portion rains back down, he/she will add more confetti. Therefore, you will have very dynamic shots. If you are taking images against a backdrop, let a confetti thrower stand on a ladder behind it and sprinkle confetti down from above.