Asian eyelid surgery can be done as early as 14 years of age depending on the maturity of the individual. Therefore, age is not an issue in your situation. You are also correct in that a larger upper eyelid would not fit your face not because your brow is low but you are an Asian. In general, large Western eyelids do not look natural on a Asian face. Asian blepharoplasty is to create natural appearance of double eyelids that some Asians are born with and not to "Westernize".
Your appearance is somewhat reminiscent of someone who had an Asian blepharoplasty already. The crease line is a bit high (raise brow view) for a naturally occuring crease. The skin fold is deep and slightly irregular. But the degree of eyelid show is perfect. It would be a great result if it was after surgery. Therefore, doing a surgery on these eyelids would not improve much upon the already nice appearance.
This degree of puffiness adds to the youthful appearance. The fat should be preserved and respected. With further aging, the fullness is likely to fade and cause tired, aged appearance. Therefore, in this case, removing fat will hasten aging of the eyelids.
In the future, when eyelid fold comes down further and the skin slides toward the eyelashes, the skin may be tightened by appropriate removal as well as fixation of the crease to the eyelid moving mechanism to create crisp creases and bright upper eyelids.