Sopwith Camel

Very much improved. My biggest crit has already been hit upon (the sun). Now for the studio renders. What type of lighting setup did you use? I would expect a three-point or something similar. It looks to me like you used a spot on the front with either AO or environment lighting. Second thing that very much stands out in the studio renders is that the engine has not been modeled. Beyond that I’m not really seeing anything, other than the prop appears to have an odd bump towards the shaft. A propeller blade is normally fairly uniform with a twist through it. Below is a blueprint showing section cuts of a blade:

I don’t really know how to do studio lighting, some help with that would be fantastic.
I admit I did notice the prop problem earilier. I should probably remodel it with a better reference image like this one.
I did model the cylinders, but I never could find an image that actually had the engine.
Thanks for the comments as always!

Probably the best place to start with lighting would be the following two read-ups:

The first is pretty comprehensive and detailed, explaining a bunch of different lighting scenarios with photographs of each in real life. The second is basically a shortened version of the first but has some great renderings showing how different lighting can be used.

I am guessing you don’t need this, but its a basic intro to Blender’s lighting system:
More lighting information:

Now that I’ve thrown a bunch of reading at you, just a couple notes from my experience that seem to be the main questions you need to answer when setting up you lighting, and I think you will find them echoed in the first two links. First, what is the environment of your scene? An outdoor shot is going to be strongly governed by the time of day and weather, but an indoor shot you will probably find yourself starting with the obvious light sources and then adding fill lighting to get the desired lighting. Next is the mood. This is touched in heavily with the second link. One other note is that lighting is a process of constantly experimenting, so don’t be afraid to try something weird. It just might be awesome.

Studio lighting really gives you the most freedom. You do not have to worry about an outside light, such as the sun through a window, and all indoor lights you have control over location, strength, and type without having to worry too much about breaking the illusion of reality in the scene. With a studio shot camera angle relative to lighting also becomes more important. Thinking about it, you probably want to turn the aircraft a few degrees to better show the model and allow you to use lighting to better affect. For example, you could use the slightly twisted angle with the main lamp being a side spot to help hide the fact the the engine really is not completely modeled.

Okay, thanks. I will work on that.