Wonderful clouds and sky in both images. The foreground, an empty backyard, doesn't seem to support the sky, but the sky is certainly worth the shot with its great 3-dimensionality and rich tonal range.
I note a difference in hue between the first (cooler greys) and the second (warmer greys). (?)
In photo 1, there appears to be a significantly darker area in the middle top which appears to be a processing artifact (too much darkening without adequate feathering).
Also, be wary of the "halo" around the foliage on the tight in photo 2. It appears to be a processing artifact, as well, caused by an adjustment brush painted to darken the sky, but avoiding the foliage, creating the brighter tone around the foliage. Again feathering with perhaps 65-75% flow plus auto mask and erasing of any extraneous brushing on the foliage.