Welcome back
The pictures work and I like what I see. The colorsceme works well and I lke the strong conrast of the blue eyes to draw the focus onto the face. I have yet to paint my first bust and I'm a bit curious if my painting habits work on this bigger scale.
Some points of critique:
The paint looks quite glossy, did you use oil paints or was the acrylic paint quite thick?
if it were thick acrylics try to thin them down just a little bit with water. When you use a wetpalette, it's sometimes even enough to spread the paint with a damp brush on the palette. The paint soaks the water through the paper membrane and thins down. Over longer time it can even become to thin.
Tidiness -> the mini has some noise, meas it's hard to tell different parts apart. For example the the chain of his necklace and the leather belt over his chest are "hard" to identify next to the fur. Although hard is relative, most painters try to make details "pop out" by creating contrast and seperating parts. for example some highlights on the fur and some edge highlights on the belt and chain would already vastly improve the contrast and contribute to the "readability" of the mini.
Hope I could help you a bit with that.
Keep painting and keep posting