Before anything I'd recommend increasing sensitivity to energy. Naturally after that it all has to do with the practices you're doing that will gather/stimulate these energies. Some will take a longer time to develop, so even if you're very sensitive you won't always be feeling them.
I don't know where you're at. However I don't think most people know just how dead their senses are, even a large amount of people doing Neidan. I would recommend something called Chi Permeation. It's a basic method of circulation that increases sensitivity. I attribute a lot of my progress to this method setting me up for success. I'm sure it's online, and it's in the book Qi gong Empowerment. Goes a long way.
Hope it helps.