Assuming the lure is constructed of wood, I would suggest you buy some sanding sealer. You can get a quart of it at just about any hardware store. Dip the lure into the sanding sealer, let dry, dip a second time, let dry. Now you can rattle can the entire lure white, use a couple light coats, don't put it on too heavy or will run on you.........do the spraying outside, paint is toxic! Let dry.
Do your painting, let dry. Now coat with your favorite clear coat.
RM