Very unhappy with buttocks after liposuction. Looking for expert with good contouring artistic skills?

Thanks for the question, you have great anatomy and an excellent result, I understand you would like some tweaking. I would likely just do alot of ultrasound in the area too smooth out the lumps and bumps and tighten the skin and maybe use a basket cannula to smooth even more, with no fat removal. I do a few revision liposuction procedures a week and I have found that to be the most predictable to help in situations such as this

Thank you for sending over your post op pics. This is a very common problem  we see after laser lipo or regular lipo. The bottom line is that you had too much fat taken out from your inner thighs and also the "banana" roll. The banana roll was commonly done in the eighties but no more. as it resulted in many problems, Whether you did laser lipo or traditional lipo does not really matter as  the results can be the same. It's operator dependent. The only way this can be fixed is by fat grafting to your buttock, lateral and medial ( outer and inner) thigh area and below your "gluteal" ie buttock crease to recreate the support that you had. Nothing else will work. Think of a balloon that is deflated and how its not smooth anymore. "Ironing"  ( tightening with any technology) the balloon edges will not work. Need to re-inflate to create a smooth appearance. Same thing here. The biggest challenge will be to find enough fat, since you are thin, to fix the problem. Recommend you consult with plastic surgeon that has a lot of experience with laser lipo and correcting these kind of problems. Its super impt. to interview more than one plastic surgeon as there is very little margin for error to correct this. Good luck.