You need to imagine your pic...

...find a background and note the lighting...

...take a pic of a plane in white low visibility or blue sky with the lighting and angle how you want...

...blow up the plane pic in photoshop cut out the plane very carefully using the pen tool....

...open the background pic in photoshop and stick the plane on it...

...change the lighting, shadowing and other stuff on the plane so it blends in with the background.

It's probably easier with big jets - with small planes you get tricky stuff like see-through cockpit bubbles and propellors...

Look in the tutorials sticky above this post for something that may help, experiment a bit, and when you know your way around PS a bit start asking more experienced members for help...

Cheers

Krigl