That tool has something scary Zivi. I hate when a program takes control of my mouse.
I had to share this. Found it on the web when I looked up "carving a pumpkin" for Cecilia.
For carving pumpkins, Cecilia, what I'd do is, make a drawing, buy pumpkins, buy a set of wood-carving tools (or even pumpkin carving tools if there is), and try away.
A pumpkin has a particular hardness, shape and texture, you'll need to experiment a bit to get to what you want. I'll have to do the exact same myself as I never carved one. I don't even know what face I'll carve on it. But I won't try to make a masterpiece with my first one, lol.