half the girls on model mayhem take pictures with there cell phones pointed into a dirty bathroom mirror. these will be more then adequte to get you onto MM, it doesn't take much.
as for the photos themselves they remind me of stuff I took when I was first starting out, I thought they were great, I posted on here, got told all the mistakes I made on them. realised they were right and went out and took better photos the next time working on things people mentioned. and I improved. 6 months down the line I looked at the photos I had posted and realised how bad they really were and how much i had improved. You have to learn how to take criticism while still being able to enjoy your own photo. if one person tells you your posing sucks, ehh shrug it off, if everyone is telling you your posing sucks chances are your posing sucks. hell my posing sucked, its not the easiest thing to learn. things that you do while looking at someone will look a lot diffrent on the computer or on a print. are some of these people harsh. sure they are. and that will make you a better photographer because there not going to sugar coat things. if you want great jobs and wows go to facebook and post there, if you want your photos disected to the 10th degree come here and learn from it. If your a beginner and you say your beginner why get upset when someone with experience tells you its not great? listen. and learn from it.