If you are looking for a Gesso recipe to use on your unprimed surfaces, then here is a link for you! I used the Cornstarch and Baking Soda recipe. This one is an easy mix, and easy to apply to the surface, and then add water to even it out. You could also thin it a little more, pour it out and push it around the surface with a plastic putty knife. That went really well for me, and I only needed to sand a little to get the surface the way I wanted it.
Until next time,
-Jason