Do you want a video on making the clothing or using it? I can't help you with making clothing, because you need a modeling program for that.   But I can show you some of the basics in the actual Poser cloth room to use a ready made dynamic item.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi