last week

The last week I was doing a 2D Design homework. I had to paint something and I had to make a visual effect to that paint.I remember that I began to paint at 2:00 pm and I finish at 9:30 pm.I thought that it was to be essay, but I was wrong, it was so difficult.That paint took me almost 8 hours, but the professor was very happy with my work and I get an A for the paint.