It seems my port has a good spread of comments on it at this point. But I'm not sure why it seems people like so many different things in the different images.
By comparison are there some element(s) in one that I can use to make the other's better? I have a few shoots in June the first is a motorcycle shoot. Any suggestions on what to concentrate on?

Some thoughts:  (Refering to images L->R, top->bottom) #1:  There's great potential here, but for me, the tight crop has ruined it.  If you'd opened it up a little more such that his right arm/elbow was fully in the image and the little bit of his left hand wasn't cropped away, this would be outstanding.  In #3, again the "little bits" you've cropped away (left forearm, right finger-tips) really hurt the image.

#s 5&6:  When using such strong leading lines as this walkway, try and place your subject at the vanishing point, not off to one side.  As composed, my eye follows the centre span of the structure right past the model.

#12:  Up the nose poses are rarely attractive, and this particular crop makes it seem like her breasts are the main subject of the image; a higher shooting position and lower crop would have helped.

Just my $00.02 worth - your mileage may vary.

~John

Thanks, I see your points I'll keep away from nasal shots. #1 got so many comments I tried similar poses with sunlight instead of studio. #2-3 were just fillers. They're self portraits that's why the crop is off. I appreciate you taking the time to look.