Can you paint resin with a brush, and if so, what are the best techniques to achieve a smooth and even finish?

Yes, you can paint resin with a brush. To achieve a smooth and even finish, it is best to use a high-quality brush with fine bristles to minimize brush strokes. Additionally, make sure to apply thin, even coats of paint and allow each layer to dry completely before applying the next one. Sanding between coats can also help achieve a smoother finish.