I bought a white pillow from JYSK for $3.00, cut the tags off and glued the flowers on. I used fabric glue which is a lot less work than sewing them all on. I made the flowers using felt from (hehe) the dollar store. The center of the flowers are little pearl like beads which are also from the dollar store. The whole thing cost me under $10 to make. My thrifty dutch side is coming out here.
So the following are pictures of how I made the flowers. Start by cutting out five circles, all the same size. Then you thread a needle in a similar color as the felt, I used gray thread. Then as you see below you pinch the one end of the circle and sew it shut which makes a pedal.
Next you take another circle and sew it on one side then sew the two pedals together. The third you do the same, the fourth pedal gets a bit tricky and the fifth is the trickiest but I believe in you, you can do it.