Cost of cosmetic bonding for small teeth and gaps?

Bonding can be used to close small spaces and increase the size of teeth. However, it is not very durable and stains easily. Bonding is less expensive upfront, usually costing 1/3 to 1/2 of what porcelain veneers cost, but you will likely have to have the bonding redone many times over the next several years. For the best esthetic result that will last decades, I would recommend at least four porcelain veneers. I hope this helps. Click save on the save button below my name, so that you may ask me more questions in the future.  

Bonding in these areas can look artificial.  I would recommend either doing nothing, Invisalign, or four porcelain veneers.  Best of luck.  

Invisalign is a great solution to closing small gaps without needing braces.  The advantage of closing the gaps with orthodontics is that there will be no need for drilling, shots, or maintenance of restorations.  However, its sounds to me like you want to also change the look of your smile and increase the size of your teeth.  In my office, we recommend ELITE porcelain veneers for stunning results.