What can I do to fix my large teeth? (photo)

Hey, I would not suggest veneers as you would be shaving off healthy tooth structure. Looking at the picture you've posted, just a little alignment would do the job for you. You could consider Invisalign for the alignment. 
All the best!

Hello!
I concur with the other answers - you have beautiful teeth and smile. Doing too much could ruin it - to fix it again would be costly. A little recontouring of your front teeth, Invisalign if you feel there is too large a space between your front two teeth, but that is all I'd recommend.
Enjoy your smile!

You have a beautiful smile. The two front teeth are much larger then the rest of your teeth.  Small adjustments with recontouring the incisal edges and perhaps interproximally will help to decrease the size so the it is more in proportion with the other teeth.  Invisalign can help to close the gap from the interproximal reduction and relieve the crowding on the lower.  These small adjustments can help you achieve the desired result without veneers.  

Do very little!  You've got a great smile and super lips, maybe some Invisalign to straighten and the dentist could perform some elective IPR programmed into Invisalign to slightly slenderize your two front teeth if desired and then perfect the edges with enamelplasty after Invisalign.  But to very little, it can be much harder to ADD tooth back and much more costly too. Stay close to Natural.

You are exactly correct--your options are to either veneer the teeth going back to your second bicuspids to fill out your smile or to contour the front two teeth and to fill out your smile by expanding the arch form of the teeth on the side. Do understand that in today's idea of beauty the large dominant front teeth are very desirable--just pick up a magazine and look at models and actresses--those teeth are stunning but you are correct---your smile could use a little "rebalancing" Good luck