Very good, when painting or drawing the eyes are the most important detail to get right. I have looked at many of your work and they are great I would advise you look at the eye and break down the parts. What gets a drawing notice is the eye and a contrast between colour even black grey and white not many of your drawings have backgrounds, these background can make a portrait. You have a great talent for likeness and shading and I mention these little details not as a critique, but as inspiration to keep moving on.

thanks