I selected your hands as something to look for in your dreams because they will always be there. Looking for anything else is just as valid provided that you pick one thing in advance and stay with it night after night until you succeed in finding it. The goal of the exercise is not finding a specific thing but engaging your dreaming attention.
The dreaming attention is the control one acquires over one's dreams upon fixating the assemblage point on any new position to which it has been displaced during dreams. The dreaming attention is an incomprehensible facet of awareness that exists by itself, waiting for a moment when we would entice it, a moment when we would give it purpose; it is a veiled faculty that every one of us has in reserve but never has the opportunity to use in everyday life.
There are seven gates and dreamers have to open all seven of them, one at a time. There are entrances and exits in the energy flow of the universe. In the specific case of dreaming, there are seven entrances, experienced as obstacles, which sorcerers call the seven gates of dreaming.
The first gate is a threshold we must cross by becoming aware of a particular sensation before deep sleep. A sensation which is like a pleasant heaviness that doesn't let us open our eyes. We reach that gate the instant we become aware that we're falling asleep, suspended in darkness and heaviness. There are no steps to follow. One just intends to become aware of falling asleep.
Intent or intending is something very difficult to talk about. I or anyone else would sound idiotic trying to explain it. Bear that in mind when you hear what I have to say next: sorcerers intend anything they set themselves to intend, simply by intending it.
For sorcerers, because the statement I made pertains to intent and intending, understanding it pertains to the realm of energy. Sorcerers believe that if one would intend that statement for the energy body, the energy body would understand it in terms entirely different from those of the mind. The trick is to reach the energy body. For that you need energy.
The energy body would understand that statement in terms of a bodily feeling, which is hard to describe. You'll have to experience it to know what I mean.
Intending is a subject not for your reason but for your energy body. At this point, you can't yet comprehend the import of all this, not only because you don't have sufficient energy but because you're not intending anything. If you were, your energy body would comprehend immediately that the only way to intend is by focusing your intent on whatever you want to intend.
The goal of dreaming is to intend the energy body. In this particular instance, since we're talking about the first gate of dreaming, the goal of dreaming is to intend that your energy body becomes aware that you are falling asleep. Don't try to force yourself to be aware of falling asleep. Let your energy body do it. To intend is to wish without wishing, to do without doing.
Accept the challenge of intending. Put your silent determination, without a single thought, into convincing yourself that you have reached your energy body and that you are a dreamer. Doing this will automatically put you in the position to be aware that you are falling asleep.
When you hear that you have to convince yourself, you automatically become more rational. How can you convince yourself you are a dreamer when you know you are not? Intending is both: the act of convincing yourself you are indeed a dreamer, although you have never dreamt before, and the act of being convinced.
I don't mean you have to tell yourself you are a dreamer and try your best to believe it. It isn't that.
Intending is much simpler and, at the same time, infinitely more complex than that. It requires imagination, discipline, and purpose. In this case, to intend means that you get an unquestionable bodily knowledge that you are a dreamer. You feel you are a dreamer with all the cells of your body.
You must reach your energy body on your own. Intending the first gate of dreaming is one of the means discovered by the sorcerers of antiquity for reaching the second attention and the energy body.
To ask a dreamer to find a determined item in his dreams is a subterfuge. The real issue is to become aware that one is falling asleep. And, strange as it may seem, that doesn't happen by commanding oneself to be aware that one is falling asleep but by sustaining the sight of whatever one is looking at in a dream.
Dreamers take quick, deliberate glances at everything present in a dream. If they focus their dreaming attention on something specific, it is only as a point of departure. From there, dreamers move on to look at other items in the dream's content, returning to the point of departure as many times as possible.
All that is required is your awareness of falling asleep. Dreaming has to be a very sober affair. No false movement can be afforded. Dreaming is a process of awakening, of gaining control. Our dreaming attention must be systematically exercised, for it is the door to the second attention.

The difference between the dreaming attention and the second attention is that the second attention is like an ocean, and the dreaming attention is like a river feeding into it. The second attention is the condition of being aware of total worlds, total like our world is total, while the dreaming attention is the condition of being aware of the items of our dreams.