Star shot is quite good, I like the tree in the foreground. The second one is not too bad, but I would like to see a bit more contrast in the sky to bring out some of the detail in clouds, provided that they are not blown out. Also, watch the placement of your horizon. In the second one it is almost in the middle and thus sort of cuts the picture in half - check out rule of thirds for horizon placements.
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WesternGuy