Of the two I'd say the streetlamp one has more potential but both are not very strong as they are. I don't really see the draw of the thorn shot, but in the lamppost I can see the play on light and dark, and the symmetry of the background. What bothers me is that the lamppost is crooked, and the bulb facing the wrong way. If it were straight, and the bulb were pointing into the picture instead of out of it, and the building in the background perfectly bifurcated the background it might be a little more interesting due to the found symmetry. Especially with the lighter highlights on the building itself providing a light contrasting element in the lower right which opposes the dark contrasting element (lamppost) in the upper left. The sky also has some hot spots in it that distract. If they could be re-worked to be smoother, or toned down it might help too.
Just my $0.02, but that's what great about photography there are so many different styles that not everybody has to like everything and everybody has their own style.