It all sounds fine.
You don't need an apostrophe on "readers" because the readers don't own anything!
Is the grammar correct? This is an example of imagery because it appeals to the senses of sight and hearing. Also gives the readers (does there need to be an apostrophe in readers) a detailed description of Mrs. Hirsch's son.
2 answers
**Suggestions and Corrections are in parentheses
This (instead of "this" try identifying what you are talking about; you can write: "This sentence" for instance ) is an example of imagery because it appeals to the senses of sight and hearing. Also (it) gives the readers (no there should not be an apostrophe in readers) a detailed description of Mrs. Hirsch's son. (Overall, good job :) )
This (instead of "this" try identifying what you are talking about; you can write: "This sentence" for instance ) is an example of imagery because it appeals to the senses of sight and hearing. Also (it) gives the readers (no there should not be an apostrophe in readers) a detailed description of Mrs. Hirsch's son. (Overall, good job :) )