Body sculpting and BBL! Do I have enough body fat? (Photos)

Thank you for your question.
Based off your pictures you look like a great candidate.
A  Brazilian butt lift harvest fat from areas  with the fat removed from the areas using your own fat it transfer to the buttocks and into the hips.The common donor sites for this procedure is your posterior waist/flanks, lateral thighs, back, waist, and anterior tummy.
Choose a board certified plastic surgeon who is highly experience in Brazilian Butt Lifts.  

Dear Just_me123929292,based on your photos, you look like a good candidate for a BBL. Liposuction of your abdomen, back and flanks should give you more curves and hourglass shape and fat transfer to buttocks should give you more projection. I would suggest you to consult a board-certified plastic surgeon because only after a thorough examination you will get more information and recommendations.Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

An exam would provide a better way to evaluate you for the procedure. 
I liposuction thin individuals frequently with significant results.  I have performed the procedure on many thin patients and models, but this all depends upon where there is fat (abdomen, waist, thighs, back) and how capable the surgeon is at removing that fat.  The thinner patient requires an expert at liposuction to remove as much fat as possible while leaving the skin smooth.
Kenneth Hughes, MD, Board Certified Plastic Surgeon
Los Angeles, CA