The speaker starts with something simple: nobody looks at a flower and says it's too tall, too short, too pink or too red. We just accept flowers as they are and enjoy what makes each one different. Then the poem turns on its last lines, asking why we can't give ourselves the same kindness.
The feeling behind it is gentle but a little sad. The speaker seems frustrated that people are so harsh with themselves, and the question "What about us" in the title carries that hurt. The question at the end isn't angry, though. It reads more like an honest invitation to think about it.
The mood is quiet and hopeful. Short lines and plain words make it feel like a thought spoken out loud, and the flower comparison makes the message easy to grasp: if unique beauty is obvious in a flower, it can be true of a person too.