In a large bowl, layer pasta, asparagus, peas, and arugula. Add 2/3 of the dressing and gently toss. Top with dill, chives, and parsley. Toss gently again. Season with fresh ground pepper. Taste and add additional dressing or pepper, if needed. This layering process will help avoid the ingredients landing at the bottom of the bowl. Transfer to a serving bowl (garnish with additional sprigs of dill and parsley leaves) and serve.