These Asthma Lung pictures will educate you about the human lung and give you examples of what they can look like.
This illustration shows how asthma in the lungs happens, due to lumen of the bronchiole being constricted.
Here's another diagram showing asthmatic lungs.
Here's an xray of asthmatic lungs.
This diagram demonstrates asthma and your airways.
This xray shows the asthma in the lungs, indicated by the blue arrow.