#1 could be better with more depth of field, to me. I kind of like the multiple points of light.
#2... well, it's a boat. At least we don't wonder what it is... while it's a little bit interesting to see the boat out of its natural element, that particular boat would be better at a dock.
#3 is nice, but possibly could use a bit more color saturation. TheSon says the colors are a bit dull, but frankly... the colors *are* dull.
#4 seems to be a basic still life, but it is an interesting angle. Not bad, but not great, to me.