Having Pathworked both the Qlippoth and the Tree of Life i can share the method that worked well for me(of course this is simply one method among many others, but it worked for me so may be it work for other as well)
The Sphere of Malkuth is ruled by the Archangel Sandalphon, Thus i decided to Evoke him and ask him how to Enter the Sphere of Malkuth .
After He Manifested and after my Question was asked, he answered :
"Malkuth is the Earth, the Physical Realm, seen in a Different awarness, a Magickal one, Mundane people live their Physical Life in a Limited way, entering Malkuth mean to start to see the World you live in, in a more deep and broader way. "
Since i’ve practiced Magick for some time before Starting my Tree of Life Pathworking, i told him that i already have such a Vision of the World.
He then replied : “Then you are already in the Sphere of Malkuth, do the Work of that Sephirah and Ascend!”
I asked him what work should be done, on what he replied :
“The Element are the Basic of all Creation, Both of the Inner Univers and of the outer Univers that are ultimately the same, Balance them and Bring them into union in yourself, this is the Task that must be done in the Sphere of Malkuth, before you proceed Higher, Because to be able to ascend in those Higher Sephirah, you must be well grounded and Balanced in the Physical Plane of Exsitence.”
“Evoke the Four Elemental King and work with them, Ask them to teach you the Perfection of the Mastery of their Elements, and then, when the Work is done, evoke me again and i shall give you the Keys to the Door of the Bridge that lead to the Other Sephirah”
This is how i entered and Pathworked through Malkuth!
Hope that Helps!
Best Regards!