Non-Mopar project I've been working on.

That is still hard to do. I use to custom paint back in the 70's on vans and trucks and did ok but decals are not one that I can do very well. I remember the first time I did the 1980is FireBird super chicken decal on the hood It took two decals the first time to get it right I really thought my boss was gonna fire me. And to this day I can't do a decal of any size than a chevy Z71 on a standard boxside.
Did you use soapy water on the chicken and Z71 decals?

Your supposed to peel the sticky side, and spray it down w soapy water then squeegie the **** out of it from the center out once its in position where you want it.

Once the decal dries in position you peel the top paper off the decal.

I have done lil red express decals and monte carlo SS decals. All the lettering is seperate pieces. The top paper holds it all in position. Once the soapy water dries you peel it off.

Easy peasy.