studio lights I need help

[gmaschreiber]

Here are two pics that I took with strobe lights. I know walmart is not a great place to print but in my town I don't have other choices. Printed pictures look really bad. Skin tones are blotchy, background is grey instead of white. Overall picture quailty is far from professional. Anyone have some suggestions. I used a Sony A350 with a 50mm 1.8 lens on these. I actually sold that and bought a Nikon D90 with a 28-75mm F 2.8 but it is not the camera it is me. I have not been able to try the D90 with the strobes because I am waiting for a sync adapter to come. I tried just using the modeling lights and room lights just yesterday and got really poor quality prints. Third pic is D90 with modeling lights.