Is It Wrong To Copy When Building??

[skinnyboy67]

Whats everyone opinon on copying others ideas when building a clean resto or pro-tour machine.Sometimes I feel like I cant be original when building,but am able to take someone elses mod.that Ive seen and loved the look of and been able to adapt it to my car.
Why do I feel weird about this?? Anyone else feel the same??
I know this is going to be followed by a bunch of sayings....
"If your not first your last..shake-n-bake!!"