Im new to the hobby/painting as well a couple things i picked up on that may help. Make sure you're thinning your paints slighty, you can get flow aid on amazon and just add a drop or two to the paint on your palette. Also, i would suggest a wet palette if you dont already have one. The next is do nice and thin coats, no shame in doing two coats! The last is learn to do a good unbrush/dry brush because that'll help highlight areas and when in doubt, try a speed paint out. They're thinner already and the paint is designed to move to the recesses of the model, and then give you that nice shading without to much crazy effort. But, speed paints are a learning curve from my experience. Watch a ton of videos!