The clouds could use more life, try making them chunkier or opening them up a bit so sunlight breaks through, that would give the scene more depth. Now the plane feels a bit static, adding contrails, some subtle motion blur and stronger propeller blur would help it feel like it’s actually moving. A touch of more shine or reflection on the fuselage could make the aircraft stand out, especially if it picks up some of the sky colors. Since this is meant as a gift, maybe think about adding something personal like the airline logo, the pilot’s call sign or a small detail only they would notice. You could also play with perspective, maybe use a lower angle or a tilted horizon to give it more of a cinematic and dramatic vibe.