Awkward Smile- Is my Mouth Too Small? Will Corrective Jaw Surgery Fix This?

Based on just those three photos alone I can't advise you one way or another, but I can tell you a bit about some of the concerns you voiced:

• Can't Smile Big - Part of what you might be describing might the dark spaces on either side of your teeth between your lips when you smile (buccal corridors). This can be fixed with orthodontics, which will help make your smile seem more broad and full.
   
• Deep Laugh Lines - You might just be a really happy person and the laugh lines are from repetitive expressions, which is perfectly normal. This is not something I'd correct with Botox since that would affect how big you can smile and it looks like there is not excessive muscular action. However, if these lines are more static, there could be a deficiency of facial volume causing ptosis of some of your skin causing wrinkles. This can be address numerous different ways from surgical options to simple injections of dermal fillers.
   
• Biting Sideways - This might be caused by your teeth not fitting together well, and widening your smile (how many teeth are showing) with braces can help coordinate your upper and lower teeth together and keep you from having to do this.
   
• Asymmetric Chin - We all have minor asymmetries, but if you want it changed you you have a few options including a genioplasty to make your chin more centered in your face.
   
• Double Chin - It is true that jaw surgery to move your lower jaw forward can provide some reduction, but given that your bite looks like it fits well front to back and your lower lip doesn't stick out too far you'd likely have to also have your upper jaw moved forward as well. I am not certain you need all that; the double chin could simply be from soft tissue redundancy. Some of the more involved surgical procedures like jaw surgery are a big risk and it really needs to be justified to put someone through that. You really need a comprehensive consultation with a specialist.

Some orthodontists and dentists don't have training with plastic surgical procedures, so really the first place I would go is to a plastic surgeon from there they can work with an orthodontist as needed. They will be able to give you a full exam and discuss what options are best for you.