If you're doing a tux, there's always the cummerbund as an option! haha
And for stenciling, I'd try and get yourself some freezer paper
. Here's a tutorial
Also, I have a pattern
that might serve you well for the jacket! You could make the lapels out of black satin like a tux with the rest of it also black and then make the lower contrast part white. It might be cool to find a virgo lapel pin and incorporate it that way?