The blank page, untouched by man, represents God. Imagine it spreads out forever in all directions. 
God said that we should not makes images of him.  If we form something or cut something, it is made of our hands and cannot represent God.  The blank page represents God because it is untouched, or unspoiled by man.
Ok, ok.. the paper or the white board was made by men. But the first writing of Genesis 1 was on tablets, probably of stone. Tradition says that Moses wrote Genesis, but evidence of the 'toledoth' (translated 'these are the generation of') breaks Genesis into smaller stories. P.J. Wiseman demonstrates  that the smaller stories were written by eyewitnesses, and the tolodoth identifies the colophon, or signature line. The first record does not mention a man as the author, nor could any man have first-hand knowledge of it. This suggests it was written by the only eyewitness, God himself, on tablets the same way he did with the Ten Commandments for Moses.
It is curious to note that the word for stone in Hebrew is aben which sounds like the word for father ab and the word for son ben, put together. The stone represents God as the Father and Son together.
- 1Ki 8:27 But will God indeed dwell on the earth? behold, the heaven and heaven of heavens cannot contain thee; how much less this house that I have builded?
- Ex 20:4 Thou shalt not make unto thee any graven image, or any likeness [of any thing] that [is] in heaven above, or that [is] in the earth beneath, or that [is] in the water under the earth:
- Ex 20:25 And if thou wilt make me an altar of stone, thou shalt not build it of hewn stone: for if thou lift up thy tool upon it, thou hast polluted it.