Agreed. and to further elaborate on why, Electro, is because when you use too much resin, it allows the cloth to float off the surface of whatever you are glassing, and it also allows the material to be less dense since it is not very tight anymore. When you squedge it out, it pulls the excess resin out, and it allows the glass/fiber/whatever to lay down in a tighter more dense layer(s)
If you want it glossy like that without having to lay it on thick, it is perfectly fine to lay the glass, squeedge it, and then once it had gelled good, come back and roll on a layer or two of epoxy to get that smooth texture while allowing those layers to gel up good before rolling on more for the desired finish. Once the epoxy gels, it can't really float up or spread out anymore. Laminating.... I'd get a West Systems book if I were you, and just leave it on the crapper in the bathroom. It's good for alot of little tips like that.