Add a splash of color by using florals to dress up your party, but keep the tasting table pristine to showcase the luscious color of the wine.
A white tablecloth is what you want for a red wine tasting to allow for a clean background and the color of the wine to be authentic.
Go for mild-scented flowers to add decor without a strong aroma that may overpower the wine's bouquet. Red Calla Lilies would be lovely and tie in the wine tones.
Place the flower arrangement on one end of the table and illuminate it by adding unscented votive candles around the base.
A framed menu of the wine that you will be tasting on the other end of the table will be much appreciated by guests. Set votives near the frame to add to the ambience.
Fill in the remainder of the table with elements for the wine tasting, which I find to be decorative as well.
Keep the lights dim yet bright enough for all to read the tasting notes and enjoy the appearance of each wine while they taste.