iPad Game Background question

hzapps

I am about to begin a Vertical shooting games with a actor that goes from bottom and the camera follows it up.

Is it smarter and more efficient to create an actor in GIMP that it 768 wide and 5120 Tall with all of the terrain in the picture, or simply create a screen that is that tall and input each individual actor like water, trees etc along the way?

Thanks in advance for your help.
Herenzonapps

Clouds

. . . create an actor in GIMP that it 768 wide and 5120 Tall

You cannot import a picture larger than 1024 pixels in any dimension.