First of all, my approach to creating in the astral is not the only one. It may or may not work for you. I should also warn you that it might seem overly complex - but that’s just my own specificity. I’m just describing how I do it. I developed this method for myself, without relying on any existing techniques, and I recommend you do the same.
According to my concept, reality is layered, and any given object usually exists in several of these layers at once. Namely: the physical layer, the astral layer (spectrum), and the mental layer (spectrum). What I do is create the object I need on as many of these layers as possible. This gives it stability. Energy alone tends to shift and change shape - it’s not stable - so creating objects purely from energy on the astral plane isn’t very effective.
Let me explain with an example. Let's say I want to create an astral lamp. This is itself an astral construct (because I can imagine this object as… well, a lamp, simply through visualisation). Then I go deeper into the mental layers - into the conceptual idea of the object.
What is a lamp? A source of light. For what purpose? To see better. What does "see better" mean in the astral? After all, there’s no physical light there; sight doesn’t work the same way as in the body. It means heightened perception of energy. How? By increasing contrast? (pushing energies of objects to extremes to make them easier to perceive, but this would distort the essence of the surroundings - not ideal). By increasing one’s own sensitivity in order to see more? Closer. So it should be something that sharpens perception. Perception is a passive skill, a receiving of information; its root is the light of awareness. I reduce everything to the core concept of this object, to the source from which it will grow. Imagine that the concept of "Perception" or "Awareness" sends roots into different layers of reality, and our lamp is only one of their manifestations. The archetypal concept is enough to anchor the object firmly in its function and make it work correctly in the astral.
My next step is purely energetic weaving, which you can easily skip, because it’s a specific skill. For most situations, the other layers are sufficient.
In terms of weaving, I establish the center of the object and direct threads outward, but in such a way that they don’t latch onto other threads - they only touch them, thus reading information from them. The threads are thin and elastic in structure. I make the pattern of the object. Then I attach the result to my head energy center.
Next, I move to the astral layers. The connection between layers follows the principle of correspondence - for example, in my weaving terminology, all these layers are connected by a mental thread. In the astral, I involve visualisation: what shape the object has, its colour, temperature, what sound it makes. Ideally, you should design signals for all senses - whatever you have the skill for. In the case of the lamp, I imagine: a sphere of light, white, hot, ringing like a bell, tasting like lemon, smelling citrus. Additionally, I reinforce it with visualisation of similar objects - here you can visualize a star, or an anglerfish. Essentially, visualization is putting a form on an energy framework.
Then I fill the object with emotions - for example, in this case, I put calmness and clarity into the "lamp." And what’s very important - faith that this object already exists.
Ideally, you should be able to almost feel this object in your hands - it should be that detailed for you.
You can stop here. But I also often anchor the object in the physical world, so that when you look at it, you recall its astral counterpart and reinforce it with attention. For example, you can use a stone or a physical lamp as an anchor.