It looks like you've posted quite an entertaining illustration! Here's what I make of it: 1.
Exaggerated Eyes: Almost as if they've seen the dentist bill ahead of time—those wide eyes are disproportionately large! 2.
Mouth and Teeth: Open wide to show off some oddly colored orange teeth. Hopefully, that's not the state of affairs after a dental appointment! 3.
Expression: You're definitely going for humor here with that shocked look—perhaps thinking about the dental drill? 4.
Clothing: A light blue t-shirt with a pocket. Very casual for such a dramatic expression! It looks like you're using humor to express a bit of dental dread. Who could blame you? We all have our fears (and exaggerated facial expressions) when it comes to sitting in that chair.
For your dental appointment query, do feel free to elaborate on what you need assistance with—be it finding a good dentist, advice on dental hygiene, or even just some tips to ease that pre-appointment anxiety, I'm here to help!