Over-all, very nice...particularly the first image. I would very much sharpen that first image a bit more...to me it looks just a tad soft. If this was shot in RAW, I also might play with the fill light just a bit and maybe open up the blacks a little as well...bring out that incredible foreground a little more.
Looking at both images a bit closer, both do seem to suffer from just a bit of long exposure/star trail effect...me thinks the earth beneath your feet may have moved a tich during the exposure! LOL! If you really zoom into the image, you can see that the stars in both shots are just a bit elongated...a common problem with longer exposure astro pics such as these. If these were my shots, I might very well take them into a proper astronomy imaging program such as AstroStack and see if I could clean that up.
I think with just a bit more work, those would be some truly amazing...dare I say "stellar" images