well i just mean you shouldnt model with your ref in your viewport...!
so keep on working...

just print them...

just final gathering!

nice start keep on working!

good start
...try to add some shadows and light directions....if you're using mental ray for rendering you should try to add its advantages like final gathering and GI!!
this should give it more...

hm try to model just with your photorefs printed on a page not directly in your viewport!this might help you getting a better perspective result...
keep on working!