Looks cool. Just have some ideas. If the jet model is not one big mesh, maybe you could put some insignia or flags on the tail. Maybe you could make the exhaust from the missiles in three parts. The part right behind the missile is fine but the other two parts you would make them more transparent or fuzzy if you were using a volumetric texture. The last part should be very fuzzy/transparent. Trails from missiles break up over time. Maybe you can aim the missiles at the jet to give the picture more excitement. What is the theme or idea behind this picture?