すみません、Nikki-さん！　Nikki-さんの メッセージ は大切に読みませんでした。私も日本語を勉強して。だから、Nikkiーさんの日本語のメッセージ は良さそうです。まだ、私は初心者です!

"have found" --> "found", because you would use simple past tense ("found") to describe an event that has concluded. "have found" suggests an action that is continuing in some way, such as an idea/realization ("I have found that sunflowers often grow in this park") or an action that causes a future action ("I have found sunflowers in this park before, so I always look for sunflowers when I visit this park.")