I'm new to MM and would love to get some constructive comments on my work.

Good pics.  You just need more of them.

Paul

Upper right hand corner of "sexy tonie" is an eye sore.  Yuck.  Delete it. 
Otherwise not bad.  Would reccomend more experimentation with lighting. (and more practice with photoshop...)
Avatar has slightly too much foreground foliage for my tastes- but is otherwise ok.  The girl is well captured.
That "eyes" headshot may be your best in your port.

try using a reflector when you shoot outside.

I would agree with sexy tonie, the liquify in photoshop has to go.  But beyond that you have distracting elements in the image.  The hydrant poking out of her leg, the pipes coming out of her head.  The forground foliage isn't a bad idea but in peek a boo's case it's too much.  Sexy is sexy needs help posing.  The exposure though isn't bad, a reflector or a fill flash could help give a sparkle in these women's eye's.