Your photo makes it a little hard to tell exactly what's going on because it is so small, but it looks like you may need a smile design. I'm not sure if that's in your budget or not, but this would correct your alignment issues and your spacing issues. I can't say for sure whether your gum line is better or worse than where it started because I haven't seen your before photos, but I can tell you that looking at everything in the photo, your gum over the left tooth does not look horrible. I hope this helps. Follow me on RealSelf for more questions and answers.
I suggest returning to the dentist who did the treatment and letting them evaluate your problem. I don't think this is faulty dental treatment.