Awareness hands can be made as detailed as your concentration allows. They can also be limited to cloudlike things almost without form. The idea is to experience them in the exact same way you experience your physical hands as they are attached to your body. You can connect your awareness hands to your physical shoulders or you can leave them without any clear connection to your physical body. It is your decision to create energy centers and conduits in your awareness hands. It never occured to me to do so, but having now tried it I found it to work just as well.
When an energy center does not respond after some time of stimulating it, working on the area surrounding it over a gradually larger area can help. Energy blocks can involve too much energy in places or not enough. Often places with too much have energy which was meant for the areas with less. It did not get there. Relaxing the area around where there is too much energy is an option. Adding energy to where it is needed is also an option. Sometimes one option is better than the other. Maybe a good on acupressure would help, but I don't know enough to suggest one.
When an energy center does not respond after some time of stimulating it, working on the area surrounding it over a gradually larger area can help. Energy blocks can involve too much energy in places or not enough. Often places with too much have energy which was meant for the areas with less. It did not get there. Relaxing the area around where there is too much energy is an option. Adding energy to where it is needed is also an option. Sometimes one option is better than the other. Maybe a good on acupressure would help, but I don't know enough to suggest one.