It's not overly HDR which is nice. Good use of the effect to enhance the colours without being silly. Colours on the last shot are great, but it's lacking a subject as such. You got the technique down but just need a little bit more composition.
Would love to see some more shots at the location the last shot was taken in - using the style shown here, but with more attention to subject.
1st shot is quite cool and would be a good part of an urban exploration set.