So if your rose doesn't look faded don't worry too much about these two factors. Stem and foliage together with balance and proportion outnumber form in the point category. However roses cannot overcome a lack of form by having great stems, foliage, balance and proportion. On the other hand, as I have noted, it is by these latter factors that the trophy winning blue ribbon winner is usually selected from the other blues, particularly in the novice class. If it has a straight long stem with clean foliage you won't be a novice long.
Some shows have a novice class for a floribunda spray and a miniature spray.
For novice purposes the blooms in a spray don't have to be at the same stage of opening. Instead the importance is the existence of a pleasing visual effect in the inflorescence. A nice inflorescence presents a regular outline of the spray when viewed from above and the side. This could take the shape of a circle, an oval or anything else consistent and symmetrical. It is permissible and indeed desirable to clip off blooms which stick out like sore thumbs and mar the appearance, as long as you do it neatly.