1. You can first give an introduction sentence (a hook that would get the reader to be interested when reading this).
2. Make some long sentences in the middle of your paragraph and expand that sentences a little bit and don't say everything you need to say in a couple of sentences.
3. Put down a conclusion sentence that concludes what you said in the middle of your paragraph.
These steps should help you succeed in writing your eight sentence paragraph.
Your welcome. :)