Our project involved sharpies on T shirts, which is what I did here for years ago. But this time, with Tova's interest in the blood, we made our shirts 'bleed'.
Place a hard surface inside a white t-shirt. We used our metal art trays.
Use sharpies to add colored lines. Cover all sides of the shirt.
Add alcohol to the colored stripes. This causes the colors to bleed. They are more beautiful this way, and (sort of) add to the whole sheep blood thing.