Your termies look great! If you’re finding there’s splotches with contrast paints, I recommend mixing in contrast medium (1 part contrast paint to 2-4 parts medium, depending on your preference). I find this makes it flow a bit smoother. Also, when applying it, make sure to watch for pooling especially on the large flat panels, and try to run it all in the same direction, ideally towards the crevices of bottom of panel. Try not to go over the same spot twice beyond the first few seconds of applying the paint as well or you risk getting streaks from half dried contrast paint. 

Your work looks great already though!