Re: cerakoting camo patterns without stencil lines
Ok if you're talking about a sharp clean line around the pattern then......
Raise the stencil off the the stock slightly, that will give it a soft edge. Just practice on something else first. Or if you're using stick on stencils you could go around the edges with an airbrush after peeling off the stencil, to give it a soft edge.
If you're talking about a raised paint edge when the masking is removed then you're putting it on too thick. Use a few light coats to get coverage instead of trying to do it in one coat.