From the picture it appears that the dentist removed your lateral incisor not your canine. I would strongly recommend that you see an orthodontist you can discuss with you what your options are at this point.
It is hard to tell exactly from the picture how much your midline is off but it does appear to be too far to the left. The cues from your facial feature that we use to check midlines are not in the picture. Plus it is always better to see someone in person. To move your midline back to the right there would need to be space on the right. I doubt you have space now so space would have to be made (there are a number of ways to do so). Also to move your teeth the roots have to be moved as well. Invisalign may be a possibility depending upon how much movement truly needs to be done. Hope this helps.
From the picture it appears that your lower midline is off to the right. It also appears the your lower jaw is off to the right. The left side of your lower jaw looks longer and rounder than the right side. Also it appears the your "chin point" (the center of your chin) is off to the right. You may have started with a skeletal asymmetry that was "unmasked" as your teeth were straightened. My midlines as off also. As long as the rest of your occlusion is functioning and healthy your midline discrepancy is not a problem but may be a frustration.
Closing space for missing teeth doesn't work for everyone. The decision needs to be based upon your face, your skeleton and the way your teeth fit together. Talk to another orthodontist in your area. Also ask your general dentist about the way your teeth fit together now and ask for his input.
