I know I'm a newbie here, but if there's a heavy texture to it, clear coat won't hide it. Somethings it even amplifies it unless you do wet coats. Color wet sanding between base coats yields a good flat finish for your clear. Just don't polish! But be sure to hold a light to it after you've levelled out the paint, to insure you're happy with the metallic distribution etc, otherwise you may get lighter spots and dark spots, or tiger stripes (that's a term more for improper paint technique but if you sand things and they're uneven, it can also be an issue). I paint real cars so take that advice for what it's worth. I'm no pro when it comes to the scale stuff . I use automotive stuff
That aside, your base coat looks level enough to accept a couple of good coats of clear, and then wet sand/polish after that as needed