I consider my incision for Chin Implant big - can this be revised? (photos)

back 2016 i did my chin augmentation.but i was not satisfied with the result as the cut was big and shown from both side with visible scar.and my implant was inclined not straight. i asked my plastic surgeon he told me the space was too small to the implant to fit in so he was obliged to cut it bigger and concerning the implant slant he said it can be fixed by filler.what can i do about both concerns?