Young Grasshopper, you have begun the long journey in the world of figures.
Please don't take this harshly, but you need some work. All figure painters need some work. We are constantly striving to get better. So, please take this as constructive and as encouragement.
I don't think there was piping on the greatcoat, just feldgrun.
The eyes, always a tough thing to paint, need to be made much, much thinner, ovoid slits, with just the tiniest bit of off white to either side of the iris, which should take up 1/2 to 2/3 of the eye.
You'll need a flat finish to the whole thing, right now he's way too glossy.
Unless he's in drag, his lips are too red. LOL.
To me, the flesh , in general, looks too pink. You're probably using a commercial flesh and most of these are way off. Try mixing burnt sienna with white. Both are available in the Model Master line.
IIRC, you said you work mostly in car models. That's a very big transition, from cars to figure, and a very difficult one. When I do a car, I go for a very uniform paint finish. When car guys do figures, they tend to take the skill of getting a very uniform color caot to the figures. Figures require much more shading and highlighting. Just about every surface is a gradient of the base color. Cars are mostly glossy, figures, flat.
Every figure I paint represents a new challenge. Even after all these years (I painted my first serious attempts in the mid 70's) I learn more with each figure and from other painters.