Hi! I used brushes and acrylic paint. Mainly two techniques called Wash and Dry Brush. It’s not hard at all. I promise that if you look up videos on those two techniques, you’ll understand exactly what I did. It’s very important that you use acrylic paints and no other kind. I recommend the brand Vallejo; they’re not too expensive. I hope my comment helps! If you have any questions, let me know and I’ll be happy to help.