Avo

[poetry_zealot]

You lie in a bed that nearly swallows you
Body shriveled like a salted fish
Tongue lolling
Dreaming of abstracts
The rattle in your breath
Knocks every thought out of my head

Feel no shame 
Because no one’s laughing
I only remember a hundred years ago
When you peeled me oranges

This is a pretty decent poem in terms of description and imagery. Some basic tips I can give is to experiment more with punctuation because, as it is, there is none in your poem. Also, I don't understand the story/narrative of your poem (although it may just be me). Good try though mate.