Tummy tuck scar - is this normal? 6 months post-op. (Photos)

Thank you for your question.
Your scar appears to be healing nicely.  It would be best to allow the scar a full year to settle before exploring options for improvement.  If you are still unhappy at the 1 year mark you may want to consider Carboxy Therapy.  Carboxy Therapy is a minimally invasive procedure often used to improve the appearance of scars. 

For the most accurate assessment of your situation I recommend being seen in-person by your plastic surgeon.

Scars go through many phases of healing and can take up to a year to mature. You can consider using scar therapies to help improve the appearance of a scar. In addition to over the counter silicone sheets and creams, lasers and even steroid injections can help. If after a year you are still unhappy you can consider a scar revision.

Tummy tuck scars are always hypertrophic--meaning red and raised.  In time (9-12 months usually) these scars will almost always fade and flatten.  The scar is not too high.  Looks like you will have a very nice result.