Vulture

Hey all, ive been customizing LEGO clone troopers for some time now. However, one issue I have is the varnish. My process is to simply paint with apple barrel and then apply a coat of Golden acrylic archival varnish (glossy or matte). I applied the glossy one onto this model (Kix) and, like usual, it gets sticky and attracts a lot of dirt that coats the LEGO. Is there any solution to this? Should I try a different spray? http://imgur.com/nqZt8dq http://imgur.com/7cAmVTh