I SAID PHOTO!!!! AS IN ONE!!!!
I am going to start with #2, since its totally different than the other 2. It's very nice. I am guessing the flame is photoshopped, as the fire is very symmetrical, but I might be wrong. Either way, a good effort for sure. I'd put it on my home page.
#1 and #3 -- These are interesting concepts, and they are well exposed. But the composition is in trouble. Anytime you take a picture of a man made object, you immediately must consider the lines. When our eyes see a building, or a picture of one, our brain automatically makes some assumptions about lines -- straight -- and sizes -- proportional. Unfortunately, the camera lens sucks, generally, at keeping lines as straight as we seem them in our mind. We also need the lines to resolve -- they need to go somewhere, and we have to understand where that somewhere is.
So, on the first one. Too much of the bottom of the scene is cropped out. The lines created by the street don't resolve themselves. as you hacked off half the street. Also, the building on the left is tilted way out of proportion. Get this in PS, and transform tool your way to straight, consistent lines.
#3 is similar-we need the bottom of the castle with a little foreground for reference. The castle itself need to be parallel to the horizon. If you opted to tilt the camera slightly for effect, you still need the turret and castle wall to form a 90 angle, more or less, or all our eye will see is the distortion.
Both, however, are extremely well exposed and toned. Shoot wider, give yourself some room to crop and transform, and you'll be writing photography books in no time.