Replying to Review my photos por favor

Hows it going M&A...

pretty standard stuff here, just getting started in photography and i am looking for your opinions.

Equipment:

Canon T3 w/ 18-55 kit

Canon 70-200mm f4L USM (el cheapo, non IS)

not looking for gear lectures, just constructive criticism on my pics,

also, my sister needs a senior photo for the yearbook, so if you could tell me which of cass1-4 you like the best that would be helpful.