JT
Those two baits look good.
Don't forget what Skeeter said above , you can't control air flow and paint with a single action , that's why your paint is coming out the way it does.
You can tape the shoulders , just don't press down so hard laying it , I use blue painters tape.
keep your airbrush away from your bait , since you cannot control air flow your going to get splatter , keep your airbrush off the bait , as in distance , you will be able to see how your laying down your color.
Get some art paper and practice some spraying on it , it will help.
I'm far from the best painter here , just my thoughts , hope it helps.
Mike