something fell on the grass beside me. I looked at what had fallen. It was an acorn. I looked up at the tree next to me and saw a squirrel. Immediately after noticing I was looking at it, the creature ran away. The squirrel went to the barn. I was beginning to feel very curious, so I followed it. To my surprise when I opened the barn it was filled with hundreds of acorns. The little guy must of been saving up for winter. I shut the barn door and returned at the peaceful garden which was full of life.
Barnes, Mayor, and September should be capitalized because they are proper nouns. Grandmother should not be capitalized in this sentence because of the "your" before it.