Visiting airports and looking at airplanes is a good idea for aircraft modelers. There are many fads that I see in aircraft modeling that do not necessarily reflect what airplanes look like. So we all benefit from seeing real aircraft now and then, even if we only look at subjects that we are not actually building at the time. Look and see which panel lines really stand out and can use preshading or washes, and which panel lines remain invisible. How do surfaces weather. What do exhaust stacks and engines really look like, etc.