For the lasers I simply used the airbrush tool with a #27 or 67 brush the smallest that I selected and then I used the transform selection in the edit menu and used rotate, distort, perspective, and warp. Then I used outer glow and inner glow to make the lasers atleast almost real enough to be actual shots then duplicated the layers. And as for the thrust exhaust, it's best to create them on a different layer but everyone knows that. Just airbrush with a specific brush size #300 feathered or less for the tiniest detail and the use both outer and inner glow at 75% opacity 9% spread and 5px size with the range at 50%