Foam Walls

[Minu]

Between creamy silences,  - what are creamy silences? Thick, long, dark, shallow, dull, etc.; these are all words applied to silences. Creamy brings to mind a soup and a creamy soup is a  thick soup. Use the word thick. Creamy is just obtuse.
there lives a hungry nothing in my brain. - again what is a hungry nothing. It is either hungry or it is nothing. It can't be both.
It's strange, really,
that these lonely white walls don't - remove lonely, unneeded
sing.

I've never been a real fan of these poems without rhyme, they are always a little disjointed. Yours needs clarification as the first two sentences have your readers stumbling over their own two feet trying to figure out what you are going on about. Poems can be vague but they generally have some direction to their vagueness.