Understanding Maria's Painting Process

Read the following passage:

Maria loves to paint. Every weekend, she spends hours in her studio creating new artwork. She enjoys experimenting with colors and textures, often taking inspiration from nature. One of her favorite subjects is the ocean, which she portrays in vibrant blues and greens. Maria feels that painting allows her to express her emotions and creativity.

Based on this passage, what is the main idea of Maria's painting process?