C&C per req:
ISO 800??? F13??? 1/640???
You've got some nice images here; I especially like #1. 2&4 are nice, and the background of #3 does nothing for me.
There's lots of potential here, but you need to get yourself off of Program/Scene modes. Had you shot #1 with more reasonable settings, especially a larger apertuere and longer glass you would have acheived much greater subject/background separation and an overall stronger image.
Just my $00.02 worth - your mileage may vary.
~John