In December Steve Perry uploaded a wildlife presentation video from a seminar he did for a Chicago Photography School. For anyone who is new to wildlife photography, he explains and shows a variety of tips.
Not everyone will agree with all of his points. For example, he shoots with either a 500mm or 600mm f/5.6 lens and says he shoots wide open. Early on in the video, he even points out in a deer image that the eye is tack sharp, but the nose isn't. Yet that doesn't affect his sales. He shoots wide open a lot for the bokeh.
But the overall content should be very helpful especially for those who aren't familiar with shooting wildlife.
Yet that doesn't affect his sales
Customers do not look at images the way we do! Our obsession with perfection does not translate into more sales. I can't tell you how many times I've suggested a more technically precise image to a customer whom has said, "No thanks, this one is cool, I'll take it". and I shake my head while taking their money.