I am by no .means an expert on the subject but here are a few things I can tell you guys about it::tu::
1) Just slap some clear varnish on a (for example) flower pot,
2) then put a napkin picture on top of the clear varnish,
3) then add a top coat of clear varnish making sure the napkin becomes totaly saturated with varnish
4) and you paint it from the center of the napkin going out towards the edges trying to get out all the air bubbles.
5) Let it dry. Done.
Tips:
1) The flower pots shouldn't have a beer belly form. Of course they are round but not round & with a beer belly form. I did one beer belly formed glass (first two pictures) with a small set of chickens on it & it turned out ok but you have to make several cuts into the edges of the napkin & overlap the edges while adding the varnish. Gets a little messy on the fingers & only works well with small pictures.
2) White glass, clear glass or colored/tinted glass gives the best results.

Dark colored glass kind of takes away from the pictures added to it. I did a green flower pot with "I

" on it and the letters I had cut out hardly showed up on the green pot so I had to improvise so I "scribble-traced" around the letters and pictures with a pen. Not my nicest work but it was saved by the pen. Now has a sort of "cartoon" look to it.
3) If the napkin layers get seperated from another don't panic. Just put the white part on first & then add the top layer or layers.
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