How do I make my face shorter and wider? (photos)

I think you are starting with a beautiful face. Sometimes we are our own worst critics. That being said, filler could be used to improve cheekbone definition and chin projection which would give a more heart shaped face. I recommend you schedule an in person consultation with an experience local aesthetic physician to discuss your concerns and to come up with an appropriate treatment plan. I do believe less will be more with regards to face and filler treatments. 

First, you are a beautiful girl and need to be a little more gentle with yourself.  I think a selective use of fillers in the chin and cheeks mainly will give you more of the appearance you are looking for. It is hard to tell if your temples need filling from the photo.  Also adding filler to your lips will give you the volume she has and will lessen the distance above your upper lip in appearance.

Hi carlacapers,You are a beautiful girl who doesn't need enhancements and your smile is sweet and natural. There are new techniques that can fill the temples but to be honest, it's meant for people who've undergone some fat loss or bone resorption. Sculptra might give you the subtle enhancement and it will last longer. You may need some Voluma or Restylane Lyft for the cheeks, specially if you want to build up the cheekbone area. Voluma can also be used for your chin and some jaw contouring. For lip enhancement, it's best to see this from a proper perspective. It needs to be proportional and balanced to the rest of your features. Juviderm Ultra and Ultra Plus give the most volume but Restylane Refyne produces the least swelling.All the best,Justin Harper, M.D.