They look great.
The only advice I can offer is the following:
1) On the first mini, try to paint on some very, very thin green stripes (I do them in 3's, next to each other). A 10x brush will do the trick. Be sure to have very little paint on the brush.
2) Try to make the bright colours on the other mini's just a wee bit brighter.
But those are just details really. As I said: Great work.
edit: Saw the other topic, they look good.