You can ensure the energy points in the feet are open by feeling the energy with your hands.
The point is called Kidney 1 in accupunture/qigong
Point your first two fingers together (sword fingers) in the direction of flow through the point you want open.
E.g. for the feet, Kidney 1 is called Yong Quan. Point the finger at the back of your foot pointing through so the energy goes out the other side through Yong Quan. Visualise the energy streaming through like water under pressure, the more the merrier. You’re looking for a clairsentience, tingle or image flash that it’s open. It usually tingles or feels like a fingers-worth or pressure is on it, without there being a finger there.
(Surface points can open and close like pores, and being close to nerves it’s more likely the nerves will be stimulated and cause sensation.)
Once you’ve done it once, you should be able to put your mind in them (focus on them) to open them. They’ll semi-close back up on their own when not in use.
To ground, open Kidney 1 and walk around on grass or the earth. (I.e. not on a raised floor).