Very pretty wall hanging. Pricing pretty much depends on (1) how much it cost you to make it, (2) whether you want to sell it, and (3) how much you like the person who wants to buy it. If you want to sell as a business, to make a profit, figure out the cost of the materials and the time it took you to make, figure an hourly salary that satisfies you, and then see if the buyer is interested in that price. If you just want to re-coup the cost of the materials, that's fine too.
PP means paper pieced.