Nice work Taggi, not much more I can add, your brush work is nice and smooth, and your palette of colors is a good choice. I like the effect with eyes as well, I'd have probably gone for a green or yellow maybe, but the white works too
It's the base that lets it down, just some static grass would have been better than the twigs IMHO.
But, as you say, this is your weak spot and it just takes a bit more experimenting and playing around, although I don't think you really want to be using "Phlegm" on your bases. (it's the yucky thick stuff you get when you have a cold :wink: )
There are lots of good articles about bases, from beginner to expert, in the Articles section
Looking forward to seeing more of your completed minis
-Mick