I vote for #3 also. I also like the darker beaker. It looks like it's been in a fire.
Using some glass frost solution inside the glass may give a nice effect and then use some of the techniques you've already done.
To seal the paint, maybe a spray of satin shelac? I'm not sure, so try it on one of the glasses you don't like as well first.
Using some glass frost solution inside the glass may give a nice effect and then use some of the techniques you've already done.
To seal the paint, maybe a spray of satin shelac? I'm not sure, so try it on one of the glasses you don't like as well first.