This St. Patrick's Day card features a sunny yellow tennis ball centered on the front, with soft shading that suggests its fuzzy surface and gives it a cozy, close-up feel. Resting on top is a dark green leprechaun hat tilted at an easy angle, like it’s been placed there by a friend after a lucky match ☘️. The hat has a black band and a small gold buckle that catches the eye against the green. Behind the main image, the background fades from lime green into a paler green, like early spring light spreading across the page 💚. The word “TENNIS” appears in large white letters above the lower portion of the design, standing out sharply against the green. Beneath that, “Happy St. Patrick’s Day” is written in black, flowing lettering that curves gently and feels like a note left for someone special. The ball and hat sit cleanly in the middle, framed by the smooth green gradient with no extra objects around them.