Jasper is standing at the end of the path made of white and red (and some orange) rose petals, under the arch, next to the officiator for the wedding.
If Jasper said that he is not nervous, he would be lying.
Everyone is looking at him, but he does not care about that. He is anxious and excited and slightly dazed because soon the rest of his life will begin, with Ellie as Mrs. Jasper Kiani by his side.