I did have the same surgery. My only facial thing pre surgery was that just a few weeks prior to surgery I developed a slight mouth twitch when I smiled. For me that twitch actually went away after surgery instead of getting worse.
Another piece of advice for afterwards. Set goals but don't make them goals that take a long time. You will feel better about your progress if you are able to meet goals quickly. It's ok to have long term goals but don't concentrate as much on that. My long term goal for after surgery was to complete a 5k that was to happen about 6 months after surgery. But my first goal for that was just to finish even if I had to walk it all. I set short term goals that I could meet within a few days which kept my spirits up and kept me from giving up on the long term goal. My first short term goal was to walk around the hallway at the hospital 4 laps with the walker. I had a longer stay because of secondary infection, but by discharge I was walking 1/2 mile around the hallway with a walker or someones arm for help. At home my goals were things like walking to the mailbox without any help, then to the stop sign, then around the block. As I worked on the short term goals, my long term goal became too easy so I'd adjust it from time to time. From walking the whole thing, to jogging part of it, then to jogging the whole thing, then to running it. When that six months came around I actually ran the entire 5k in under 30 minutes. But if I had set that as my goal from the beginning, I may have given up early on when I was struggling to walk to the end of the road and back.