There is always room to improve in anythign that your doing. Always.
When you focus on one style, your never gonna be perfect, no mater how much someone says your already amazing in that particular feild.
I think J'Kar is doing very well in his style, he does his contours well, shades everything right, but eventually if he keeps going at it, his style with greatly improve, which is changing his style.
Everyone tells me im awesome, but i always try to do better, because when i look at some of my old drawings, i always go "i can shade that better" or "i can define that line better", and i think about these things when i draw later, and i keep repeating the process over and over on new drawings. J'Kar still has much to improve on, and he will eventually realize the big flaw (everyone has a flaw in a drawing. nothing is perfect)
and will try to improve it, and he too will repeat his own process the same way i do.