What you need-
You can take the markers and draw lines, and dots all over the coffee filter. Or you can just skip that part and go right to food coloring.
You then take your water and or food coloring and dot it all over the coffee filter.
You will then let them dry for a little while and then crinkly the middle together.
For the center you can use split up clothing pens, covered with a robin (Life I did). You could use pipe clears, clothing pens not split, clothing pens painted you could also use pop sickle sticks the list could go on and on.
This is a great project for your kids. My 2-year-old even made a few.