Took a quick look and your stuff is pretty awful. The most significant problem is the contrast and oversharpening. It looks like you’re applying some sort of weird effect on the threshold between contrast and large-radius sharpening, like the clarity adjustment in ACR maybe. Stop doing this. Just stop. With Flickr it’s often not a good idea to sharpen at all because they apply heavy sharpening to every photo you upload. If you have a shitty lens, maybe try some barely perceptible smart sharpening, but that’s it.
Also clients are philistines whose opinions are meaningless. When you create better photos, you get clients with better taste and more money to spend.