If I may offer some advice after reviewing some of your recent work? Let me preface this by saying you've produced some ace work of late that you should be very proud of, and also that I don't claim to have mastered anything that I am about to discuss. Alright then, constructive crit below:
Your shading and highlighting is spot on, and you are leaving smooth blends on your figures, so you've definitely mastered those fundamentals. Though the blends are nice, the paint isn't going on very smooth in places. I have this issue as well sometimes so Inunderstand the difficulty. The female's face on the previous page is a good example: she has a very grainy texture to her. This could be caused by a few things:
1) Your primer is crap and leaves chunky, grainy paint behind. Sets you up for failure from the start.
2) You are over working the paint. After going back and forth one too many times trying to get good blends and such, you put down too many layers, and it's all just too thick.
3) You are not letting the paint dry enough before adding layers. This tear apart the previous layer and the displaced paint dries irregularly, leaving behind a grainy surface.
4) You are not diluting the paint enough.
5) The paint you are using has dried in the pot and contains chunks of dried paint.
6) Your brush needs to be cleaned more while painting in order to avoid leaving dried bits of paint on the figure.
7) You are applying too many layers in your glazes.
8) You are brushing against the grain or in a direction that leaves the paint in pooled areas.
It it is likely a combination of some of these, but I would guess that #3, #7 and #8 are the chief culprits. Remember to always be very light and gentle with your brush strokes, especially after the base layer is down. And if you see a speck get left on the mini of a little clump of paint, do not hesitate to stop painting, get out tiny blade or toothpick or something and remove it.
Smooth painting is really just pushing the wet paint around on the surface until it all spreads out smoothly and evenly. Much like buttering bread.