jacobs ladder, 7 heavens yetzirah:beriah
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An illustrated Journal of eastern and western wisdom
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So, if I understand correctly, the first 4 heavens is in the third world, and the other 3 in the fourth one?
The first three heavens if ascending the Tree are in Yetzirah, world of Formation and images. 4th, 5th, 6th and 7th are in Beriah, world of Creation. All the heavens are in the centre column of consciousness. The seventh heaven is Tifareth of Aziluth, world of Emanation. The four worlds overlap and interpenetrate dimensionally. For more clarity see the work of the late Warren Kenton (Zev ben Shimon Halevi) on kabbalahsociety.org