My hairline is very rounded and asymmetrical. What can I do?

As a male teenager
matures the hairline changes from a rounded low hairline to a V shaped hairline
with slight recession at the corners.  It
is normal to have an asymmetrical hairline. 
Occasionally this asymmetry is more exaggerated and may bother some
patients.   If so, they should seek the advice of a hair
transplant doctor.

That is a simple juvenile type maturing of frontal hair line.  That is seen almost every young boys almost between 16-21 that have a very rounded hairline without recession in the corners.  Recession in the corners is a sign of mature pattern male frontal hair line. asymetry is normal also.

Keep in mind that hair loss is progressive. It is important to get on a preventative regimen. You should switch to an organic shampoo. You can also consider a natural DHT blocker like Saw Palmetto. There are also medications like Finasteride (a DHT Blocker) and Minoxidil (Rogaine) that can be very helpful in maintaining you existing hair, helping to prevent future loss and even regrow some hair. Before taking any medications you should discuss this with your general physician.
A great first step would be an online consultation. Often you can submit photos to top hair restoration surgeons for a complimentary evaluation. This should help lead you in the right direction. Having multiple consultations with different doctors cannot hurt. 

If you have a juvenile hairline that is rounded, just wait until you get older and the hairline will mature changing it from a rounded hairline to a V shaped mature hairline which usually occurs between 18-29 in men