I love the painting pointers Namabiiru, keep them coming. For the Higgins boat I was after a smooth hard-shell look. My results so far point out a lack of proper sanding in the beginning, you can see like a sharp stick in the eye the hills and valleys that show up under certain lighting. Using Vallejo Model Air paints which are already thinned out for use in an airbrush, was also a surprise with how thin it was requiring way too many coats to cover the different shades of wood and putty fillers. On the positive side of this experiment, because of the repeated use of my airbrush, I started learning the tricks to its proper use, there are numerous little things one can do in terms of adjustments, intermediate cleaning between color changes, pressure settings, and needle and tip sizes for the type of paints. All which I am a beginning to get better at. Your suggestion of the Acrylic Gouache sounds interesting, if its thick enough to act like a filler I could apply it with a spatula over the lower groove areas and after drying a light sanding with 400 + paper then respray?