Designed with a simple black-ink illustration on a bright white background, the card centers on a single-tier birthday cake with gentle cross-hatched shading that gives it a soft, touchable texture 🎂. Five slim candles rise from the top, each topped with a small flame hinted by quick, curved strokes, like tiny sparks leaning toward one another in friendly closeness 🎉. The icing drapes over the cake’s edge in uneven, natural folds, suggesting a cozy, shared-at-the-table moment rather than a formal display. The overall look stays minimal, letting the fine linework carry the mood, like a quiet celebration between people who know each other well. Beneath the cake, the words “Happy Birthday!” sit centered near the bottom in black lettering that looks loosely written and welcoming. The contrast between the dark lines and the open white space keeps the focus on the cake and candles without any extra background details. Small variations in line thickness add depth to the cake’s sides and base, making the dessert feel grounded on the page. The flames are the only hints of color, appearing as tiny bright accents above each candle.