This is a nice HDR you've got here. I love the amount of sky you've captured. You were lucky you had the right cloud cover to make the sky interesting enough to be able to capture such a large amount of sky! I think I may have even got a little more, or cropped from the bottom a little, as the very bottom of the photo is quite dark, it seems a little out of place. A little straightening would go quite far too as I feel I need to cock my head slightly to see the photo straighter. Nothing absolutely necessary. Just small aesthetic things that can improve photos in minor ways.
I like the HDRing. It's a little past feeling natural but it isn't completely over the top. It's enough that you've probably captured some of the lighting you would have seen personally but pushed it a little further for a little surrealism and pushed out some detail you otherwise wouldn't have had.
Quality wise, it looks quite well but you can unfortunately tell that this HDR was created from a single RAW file. I think you could have kept more quality and captured more detail if you had have done a HDR sequence, rather than from a single RAW. It's here nor there but something to consider in the future for quality purposes.
Overall, a lovely shot. Love the desolate feeling the entire image has.. almost feels like no one exists! And I do love the colours. It doesn't really have a Spring feeling to it, but more a warm winter feeling to it but this isn't a bad thing, as it adds to that desolate atmosphere that it has. Keep it up!