YouTube thumbnail: Promotional graphic for a tutorial titled “Building S-Curve in Power BI.” A woman wearing glasses and a black polo shirt with the “SF” logo and “Smart Planers” text stands on the right. The background is diagonally split—dark grey on the left and black with yellow dotted accents on the right. Bold white and yellow text highlights the video title. A red “SUBSCRIBE” button with a bell icon appears in the bottom right corner, inviting viewers to follow the channel. The design signals a practical, data-focused learning experience. Click to be directed to the video on YouTube.