Dear Raelynn36!
Aesthetic treatment depends on the your desires and final goals. Your does not look bad as it is. If you's like to enhance it, then I recommend having more than 4 done. As you mentioned correctly, your lateral incisors and canines are small in comparison with the central incisors. Moreover, i would suggest to have a minor gum lift on those teeth to even out your smile. Since your teeth are of good color and healthy, to avoid unnecessary sensitive tooth structure removal, i recommend lumineers to enhance the whole smile, which means on lateral incisors, canines and premolars. This way your smile will be dramatically improved and looks more proportionate. Make sure you choose a specialist in lumineers. Good luck!