Student or Learner
1. A small piece of printed paper stuck on an item to be mailed, indicating that postage has been paid.
The postage stamps on the letters from overseas were almost as interesting as the letters themselves.
2. (figuratively, colloquial) A very small area.
We have just a postage stamp of a back garden.
Do you think that most native English speakers know the figurative meaning of "postage stamp"?
In context, yes.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.