How do sales skills help with making better presentations to a client?

The chief benefit that sales and business development training brings to you is that it helps you understand that it's NOT ABOUT YOU or the wonderful message that you are bringing to the world.

It's all about the audience, their needs, and their requirements. The best presentation in the world can fall down flat if delivered to the wrong audience.

The wrong audience are the folks who aren't interested in the message or have no need for it.

So the first thing that sales practice will help you with for better presentations is to ask the questions, "is this the right audience?" and "how can my knowledge/ experience be brought to the particular context of this audience's needs?"

If you are asking these questions, you are making a step in the right direction for a better presentation!