If we are being particualrly autistic and cherry picking flaws.
You could :
Dye your brows and lashes for stronger and thicker brows and lashes.
You could also wear contacts as mentioned, it could look more striking, but I imagine the color really isn't much of an issue IRL.
One thing for sure is using clear mascara and curling lashes, this will look good and is really affordable and easy looksmax.
Tbh other than that, there really isn't much that needs doing, you should move onto the next area which would benefit from improvement.
The eyes are good, what about your jaw? Physique? Leanness? Skin quality? Coloring?
All of these things (assuming you are lacking in one or more of these areas) will bring you the greatest return on your investment as opposed to maxxing out an area where you are good already! Google diminishing returns if I haven't expressed myself clearly!