Doing crafts with children can raise your blood pressure. It's messy, if you are a control freak it is hard to let a child do something that could end in a mess. That being said I think this project is doable and fun for everyone for children ages 4 and up. My little guy was taking a nap, I wouldn't have attempted this if he had been awake.
I bought a 5 pack of t-shirts at Walmart along with some fabric paint. We had a cousin visiting us for a few days and wanted him to make a souvenir. We did this project outside, because the weather was fantastic and paint on grass is easy to clean. Before we started I set a few ground rules:
1. Squeeze gently.
2. Use one paint at a time.
3. Recap the paint when you are done with it.
Here is a spider web--I taught the children how to squeeze gently. For the most part they were really good about not squeezing out too much. My princess made a huge pile of white paint--when it dried it was much flatter. They had such a great time doing this.
I also bought matching sweats and added a spider web to the side of one of the legs. One of the webs is sliver, the other is glow-in-the-dark. I would suggest buying an extra glow-in-the-dark bottle, it is a popular color.
Memories and Fun...what more could you ask for?