Though I haven't weighed out my doses in years, I estimate my sweet spot to be somewhere around 20mg. Through my continual use of DMT I have become more sensitive to it where I need less to get to the same spots or further as 5-7mg more might have originally gotten me, but then again my technique with the GVG started off pretty poor initially so there was a big improvement in that category too which could explain some things about the apparent increase in sensitivity. I prefer to vaporize pure DMT without harmalas nor enhanced leaf out of the good ol' GVG. All I have is a bed of ashes I put it on (which certainly does the trick but sometimes I wonder if it "taints" the experience).
If the dose is properly delivered, the experience with this dosage range of 20mg goes a lil' something like this: In the span of the time it takes for me to hold my hit in, the textures of the room instantly shift followed by 2D patterns forming at the wall I'm looking at which then gain a 3D texture while remaining glued to the wall which will typically rupture from the wall as a 4D+ object/entity/entire scene. These 4D+ holograms then make their way over to me (because I'm usually concentrating straight ahead at them; if I were to shift my focus elsewhere in the room, they would follow my stream of attention to my focal point). As they make their way over they attempt to align themselves with my body and visual field. This is around when I will close my eyes.
If the hologram fully aligns with me, it becomes super-charged with energy and glows hyper neon-colors with high color frequencies. If only parts of it align with me, then only those parts will be "in phase" and receive the energetic and color boost. It should seem that giving them this extra energy gives them more ability to "pull out all the stops."
From there what happens is up in the air. It could really go any number of ways. It could result in either a breakthrough or sub-breakthrough experience. Either can include crystal clear, fully dimensional visions where though the eyes are shut, it seems like they're open - just somewhere else entirely in some other vibrantly colorful dimensions. Perhaps I'll end up at the hyper castle/dome where all of hyperspace seems to come together for me, or maybe if I'm lucky I'll hit something rare like an Egyptian temple.
If it goes into a breakthrough kind of sequence, there's a bit of an addendum to how things finish up. Often I will hear a deep, booming, echoing voice, cascading on itself - signaling the arrival of the godhead (I can usually hear its voice before I can see it/before it visually forms). A lot of the time it's almost as if it has to assemble itself, or sometimes when the lower entities are running their mazes, and individual sequences, it seems as if it's all sort of a major set-up operation for constructing this super-entity. From the outside it appears as predominantly pure white with some gold and a dash of red scattered around. It's hard to pin it down as saying it looks like any one thing, especially when my perspective of it seems to play a huge part (from different angles, seen from different dimensional perspectives, its geometry acts in very intricate and sophisticated yet simple ways to make it appear completely different. It's sort of like a gigantic beetle/UFO/train run off the tracks/overly exuberant man. If I'm in "trouble" he will hopefully show up to "save the day" and usually rather effortlessly. With the blink of an eye, it might realign its geometry to create a sacred Egyptian room, and with the ever-so-slightest shift in perspective, the stable geometry reveals itself to be something else entirely. I think the important thing to realize is that it is always all of these things at once, and that it's merely the observer's perspective based on their "dimensional angle" (did I just make up a term?).
More recently, a week or two ago my breakthrough was unexpectedly derailed somehow so I had the godhead in my bedroom but sort of not interacting with me. So I opened my eyes, stood up and proceeded to walk around my bedroom, studying it from different angles in my 3D space. At its core I saw an intricate mesh of interwoven hindu patterns that are not entirely uncommon in my experiences. The funny thing about godhead interactions is that it is so large, and my bedroom is rather small, so when the interaction is over, and I open my eyes, the energy that composes the godhead is so big that it sometimes fills up my room completely to an entirety like a full container of liquid so that all of the energy hangs densely in the air, not really being able to move about too much. This is extremely euphoric to be 100% engulfed in this divine energy.
This finally leads me to the how the conclusions of my experiences typically go. I will open up my eyes, and if there is enough "juice" left in the experience, the 4D+ holograms composing my closed-eye visions will proceed to do all sorts of things around my room, ranging from interacting with my body and limbs directly, to putting on fantastical displays yet still. Depending on the experience, things can either end euphorically, sleepily or with bogged-down emotions (in the case of unfortunate contact with negative entities).
"Science without religion is lame. Religion without science is blind" - Albert Einstein
"The Mighty One appears, the horizon shines. Atum appears on the smell of his censing, the Sunshine- god has risen in the sky, the Mansion of the pyramidion is in joy and all its inmates are assembled, a voice calls out within the shrine, shouting reverberates around the Netherworld." - Egyptian Book of the Dead
"Man fears time, but time fears the Pyramids" - 9th century Arab proverb