How to prepare for the photoshoot?
The most important thing: don’t drink alcohol the day before the photoshoot and sleep well. If you were partying hard it will definitely bring some unavoidable puffiness to your face.
Prepare the accessories and the outfits you’d like to wear in advance, steam off the wrinkles if needed, make sure it goes together and ask your photographer if you have some doubts. Always better to schedule the make up artist appointment before the photoshoot unless you are really good in it. The professionals know how your make up will look in the camera lens depending on the location and lighting (outdoor, indoor, studio).
You can find some photo references in internet from the photoshoots you like and show them in advance for the best results.
And the most important: relax and have fun! You should trust your photographer it’ll help the better outcome.