As rendering is the last job, I sometimes leave it as an after thought and keep working on the animation itself until the last possible second. While that is the focus of the shot, I am aware that a nicer render would frame my work better. So I looked up a few tips on better Rendering.
http://blog.digitaltutors.com/5-rendering-tips-animators-adding-final-touches-demo-reel/
1. Use
motion blur, but very sparingly, and don't rely on it to fix problems in your shot.
(also when using motion blur you must be sure that your curves are smooth, otherwise it can appear glitchey)
2. Use lighting that will enhance the mood of your scene.
"Use Image Based Lighting if you have a body mechanics shot that doesn’t require background
elements or any set pieces, like a walk cycle, you can utilize a simple
image based light setup to achieve a good looking render in a very short
amount of time. While it may not be a photorealistic result, it can
still be a lot better than the simple playblast or animation preview.
In order to get a good result, try utilizing a simple ramp as your
background image and choose two colors that complement each other. This
will provide a nice, even light distribution for your shot. Once you are
happy with that, you can incorporate final gather to increase the
render quality. Doing this provides a nice render with a soft background
color, and each frame can be rendered in just a few seconds rather than
a few minutes if you were to try a more complex light source.
As mentioned above, this image based lighting technique is great for
body mechanics shots because it won’t cast any deep shadows and will
provide an even light source."
3. Don't over complicate things, the focus is still on your animation so don't spend days rendering.
4. Set up Render passes
5. Render as an image sequence.
I always do this because that the way i was taught, but I didn't actually know why it was better. (if you render as a movie file and something goes wrong, you can end up loosing the whole thing, rather than just afew frames.)