Create a watercolor-style illustration depicting a person using a glucose meter to check their blood sugar levels. The individual should be shown holding the device with one hand while pricking their finger with the lancet to draw a small amount of blood. Their facial expression should convey a sense of concentration or concern as they perform the test. Use fluid brushstrokes and soft color gradients to capture the gentle yet impactful nature of the scene. The composition should maintain a 16:9 aspect ratio for optimal presentation.