Chinese history - A great tutorial for scratch your own Ming vases. scratch away the paint to reveal blue underneath. You could also do black and clay colors for Greek pottery or do different cultures such as Asia, Ancient Greece, etc.
winter portraits - I like this alternative to drawing the face as the only way to make a portrait or self-portrait. I don't really like that it seems to be directional drawing as they all look the same.
One of my most popular pins, this “How to Draw a Tulip” tutorial shows just how easy it is to do. It’s also a great example of a wet-on-wet watercolor technique that can create lovely multi-colored flowers.