How does IT or how will IT "Create" an environment in a place that is completely devoid of anything, to understand this one needs to understand what exactly IT is.
At first, there was nothing and not the "Nothingness" that is there now (the "Void").
To best describes this, the "Void" is like a blank piece of paper and when you focus intently at one point, you realize that there is a bit of smudge or a small dot that is either black or brown within the paper as a result of the printing process.
The printing process is IT coming to "Being", while the dot is the "Presence" or IT gaining "Sentience". Thus, at first there was no paper and then, a blank paper was printed, after which a dot small enough to be barely visible to the naked eye was noticeable.
IT was neither created nor came from elsewhere rather IT simply came to "Be" and with IT, a "Void" of infinite nothingness came to "Be" as well. By that logic it's easy to deduce that the "Void" was a result of IT existing.
A phenomenon that occurred due to the release of energy during IT coming to "Being", something that IT, after contemplating realized.
Thus, IT can alter the "Void" however IT wants because IT Itself is the "Void". The "Presence" is merely IT condensing Itself to a single focal point. Though, whether this was necessary or made a difference or not is….
This was the knowledge IT came to understand (among other things) the moment IT was "Aware", however "Creating" something out of nothing was by no means an easy task. After all, one needs to envision "What" needs to be "Created" and "How" it should work or to be more precise, its "Purpose" which as you've guessed is difficult for a being that has been surrounded by complete nothingness.
This meant that IT would need to think of something completely different from the endless darkness It is used to, which is easier said than done.
For instance, most if not all artists need to be inspired in order to create their masterpiece, and they find that inspiration in everything all around them. From the sky and the land, the buildings (how they are shaped and their location, either relative to each other or the land their built on), the environment (such as lakes, forests and other sight-seeing place) and a lot more. Some artists even take inspiration from others or use a similar if not the same template and just call it a reference or paying homage.
However, in a place where there is nothing anywhere as well as nowhere, one would need to image something from nothing meaning that they themselves would need to conceptualize something that does not exist and make it exist.
(Creating something from nothing will not be an easy task, but it won't be a particularly difficult task either, at least for me. The void has an infinite space that expands endlessly but it is also made entirely of energy meaning that the void has an infinite supply of energy that I can use however I want without restrictions. All I have to do is take that energy and shape it to fit whatever it is that I want. If a start with something small and simple, not only will it be easy but also effective in increasing my understanding which would greatly help in making more complex things later on.)
Knowing how to do something and actually doing something are two different things that are worlds apart, if one overestimates themselves just because they have the theoretical knowledge, if they lack the proper practical knowledge needed, they will never succeed.
One does not believe that they fully know how to cook simply because they saw another person doing it or read a cookbook. They need to know the ingredients needed for a specific meal as well as why those specific ingredients are needed in the first place otherwise, they would just put in random ingredients and hope it taste good.
The more one cooks the better they understand, from the timing in placing specific ingredients to how the individual ingredients taste so they can be used on multiple recipes and still make the meal taste good rather than limiting them to only one recipe or meal.
That is why IT, the very thing that knows and is able to know anything and everything that is and will ever be known, also needs to put that knowledge to use through practical means. To further deepen ones understanding, trials and tests need to be conducted until one is sure of one's conclusion and the method it took to get there. But in truth, the real reason for IT doing all this is because….