How big are your prints going to be ? If u aren’t adverse to the modern age you can make a screen with a laser printer. when you make it and print it (no matter how you do it ) it has to be almost invisible on your transparency and you're going to have to print it with high contrast sandwiched between your receiving print and your negative (as already mentioned). instead of contact printing if you have a reflective enlarger it's one less thing to print through and might come out better.
https://www.largeformatphotography.i...aper-negatives
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