Gloss should be primed, sanded, and/or roughed up a bit before painting over ... otherwise the acrylic (or any other) paint will not adhere well.
What you could do is apply a high-adhesion or marine-grade primer in just the areas you wish to paint with acrylic ... or use a matte-finish acrylic varnish/sealer on those areas before painting and then a few coats of glossy sealer AFTER adding your designs.