You write it like this " A giant cabin is so immense"and that how you use immense in a sentence.
There is an immense amount of concrete in that building.
The pile of papers in David's box was immense.
By the application of an immense amount of effort, flair, and experience when composing a sentence.
The cost was an immense part of the projects budget.
Despite the immense pressure put on the scientist by the church, he refused to abjure his theories.
David took a break from his work in the immense heat of the summer's afternoon.
The market in flower bay is immensse.
The job she was facing looked very immense. Looking over the ocean, the little girl could feel how immense it really was.
"History does nothing; it does not possess immense riches, it does not fight battles. It is men, real, living, who do all this"- Karl Marx.
The immensity of the Great Pyramid is a sight to behold.
The immense size of that dog scared me to death!