I have been trying to figure out Tamiya panel liner for years. First, I switch to Mona Lisa odorless thinner. If you are in the the USA you can buy a big bottle at Michael's. Second, I wait about 20 minutes. I remove the excess by dipping a Q-tip in the thinner and then removing excess thinner with a paper towel so the q-tip is just damp. Third, that Tamiya panel liner will eat through Bandai plastic. I had trouble with testors thinner eating through my varnish, which is why I switched to Mona Lisa . And the thing my local hobby store owner taught me was… if you are using acrylic paint, you can put the Tamiya liner right on the paint with no varnish if you let it cure properly. Like 24 hours. Ok. That is more than you asked for so forgive me, but I ruined several models to learn the above. I hope it helps. This is a Bandai kit with no varnish and panel liner applied as described above. [ATTACH=full]107541[/ATTACH]