What is an adjective?
An adjective is a word that describes something. It tells about size, or color, or shape or anything that explains how a thing looks, or feels, or smells, etc.
Finding adjectives when reading...
When rewriting your grasshopper poem, find adjectives in the story and in things about the picture. Then, feel free to use these adjectives in your poem.
Using your own adjectives when writing...
Take care not to settle for using adjectives given to you only instead of thinking of a few of your own. For example, the story tells you the grasshopper is brown. The picture shows you the grasshopper is brown. The story tells you the grasshopper was long and that it has long antennae. The picture shows you these things also. However, the story does not talk about the grasshopper's feet, or its legs, or its head. That doesn't mean you cannot write about those body parts in your poem.
If you want to describe the grasshopper's feet as little, his head as round, or whatever, feel free to do so.
This rule includes describing what you read in the Theme-Story.
Writing about the story and the picture using adjectives, especially when they are not pointed out to you, shows what a good observer you are.
Good observers make good writers...
In order to be a good writer, you must be a good observer. Teach yourself to see, hear, feel, taste and touch things ways that let you to notice what others may miss. Noticing things around you, observing things, helps you discuss them in your writing.