Custom paint job on my snare

Hey guys, hope all is well.
I've got a question to you drumbuilders out there if i may.
I own a steambent maple snare with a barely touched finish on it (basically a naked version) which i would like to apply a custom paint job to. Since it's a UK made snare i am thinking of giving it a true UK look (think about Union Jack, Red phone booth and the likes). My question is once the job is done what is the best way to seal it on the surface? I don't like shiny stuff so more of a matte finish would be better. What are your thoughts?
Any help is appreciated.
Thank you.
 
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