First two are very nice. Clouds are very lending to the moody feel that you have going on. I think the vignette is much too strong in the last picture but theres a lot of people on here who like strong vignettes so maybe you’ll get a few different opinions on that. I think the fourth picture (apart from the vignette) is very colourful and possibly over-saturated which doesn’t fit with the mood of the other pictures.