Ok, now im just a beginner so take this very lightly but heres my critique:
1. You got the focus right on the lizard and blurred the background which is good but the stickish thing in the background is distracting and I would prefer a tighter crop around the lizard. Other than that, everything seems fine.
2. To me it looks like you got the focus right on the eye which is good but i would prefer more focus around the lizard's head. I like the shot though.
3. The one thing that bothers me about this shot is that the lane with the most interest is on the far right, where the lane in the middle has only one (very faint) light trail. Nice job if this is your first try doing this!
4. On this one, you caught the motion of the waterfall nicely but it is out of focus. Correct me if im wrong but i think you caught the focus on the leaves? Either that or you had some camera shake while you were taking it. Keep up the good work!