19 year old male serious about lowering hairline.

19 is a early age, however if you are not confident and really want to lower your hairline you can consult with a hair expert to determine your line and the best natural look

Photos cannot determine if you would be a good candidate for surgery.  You need an examination and the doctor needs to understand your goals and expectations.

At 19 years old is not not advisable to have a hair restoration procedure. If you lower your hair line now without knowing what your future balding pattern might be, you may end up chasing your hair loss. Remember, hair loss is progressive

Receding hairline is not a hair loss because of ongoing process of androgenetic alopecia but  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.

A male who is 19 should not have a hair transplant or a hairline advancement surgery because if you do and develop balding behind the corrected hairline, you will not look normal. If you get a hairline advancement surgery you will see a scar. If you have a hair transplant before your balding pattern become evident, then you will be chasing hair transplants for the next decade. You should wait until your potential balding pattern becomes evident, which is 25 years of age. Build a Master Plan for your hair loss with a good doctor. 
Your biggest enemy is the progressive thinning leading to a balding pattern that may not evident at this point in time. The degree of thinning that you are experiencing would suggest that you should see a doctor who most likely will get Bulk Measurements of your hair to determine the degree of the thinning that you may be presently having. If the diagnosis is early genetic hair loss (the most common cause of hair loss in young men and you are probably following your families balding problem), then the best treatment would be the drug finasteride which is highly effective in men of your age and may no t only stop the hair loss but possibly reverse it. If you are developing a more advanced balding pattern the best test to get is the HAIRCHECK instrument test which will determine the Bulk Measurements of your hair and this will show, over a one-year time frame, how effective the treatment will be or if you are not on drugs, using this instrument to tell you if you have ANY hair loss at all.  Once you know this information, then you and your doctor need to develop a MASTER PLAN which will define what you need