You can write your twitter caption in the bio section of your twitter profile. The bio section is a short description of yourself or your account that appears right under your profile picture. An example of twitter caption, ‘Embracing the journey, one tweet at a time. Join me as we navigate the twists and turns of life, share laughs, insights, and memorable moments. Let's make Twitter an adventure worth remembering! ’ The goal is to create a captivating and engaging caption that sets the tone for your Twitter presence and invites others to join in on the conversation.