How to Draw a Swarm of Tiny Krill with Some Enlarged Through a Magnifying Glass - Simple Guide for 8-Year-Olds

Your sentence is almost correct, but it can be improved for clarity and grammar. Here's a better version:

"Draw a swarm of tiny krill, showing some of them enlarged through a magnifying glass."

Explanation:

• Use a comma to separate the two related parts of the sentence.
• "Showing" is a better verb here to describe the action of displaying some krill larger.
• "Enlarged" fits better than "large" when talking about something seen through a magnifying glass.

So, the corrected instruction is clear and easy to understand.