Number 1 is a snapshot no real value unless you were there. the rest are going some where.you have motion and atmosphere in them and you really feel for the guy on the deck.
3 & 4 have got the vote. motion, action imminant danger. it all works. 5 is good with the drain cover and the skater thrown out of focus. BUT the background BEHIND the skater is distracting.
6. A very pretty girl on a skate board... how can you fail ! ! !
try to get her facing you next time. People like to see people facing them in pictures. If you want to crop. A subject needs a little room in a picture to "Breath" about a "Unit" of one from the base of the subject to base of the image. should be given a "unit" of 1 1/2 to 2 at the top.
What is good is that although the pose on the board is very static, her feet are blurred giving the image the only real feeling of motion that is there.
your subjects are very close to the centre of the images. Try to put them off to one side so that it looks as though they are going into the picture (Look up rule of thirds. and remember that although it is a rule . Rules are made to be broken... but only when you understand why thay are made in the first place).
7 is the same. although better placed in the frame.
the next lot are pretty good as well, with the feeling comming over (I know just what you mean about the size of the puddle. A full reflection would have been a gift) . You work quickly, with what you have been given. and you will gain experience. iti s all working well so far .
Hey I liked them...
P.S. She really does have a gorgeous Bum !