The pilot is included in an Aircraft project.
Some airplane models, like the SDK Gauge Aircraft example, contain a non-default pilot. Don’t know if the pilot can be entirely replaced with an new 3d object. But have a look at the textures. Pilots mainly consist of textures… if you’d like to replace the face texture, you will have to slightly widen the image… the texture is wrapped around the head…
Doing textures with Paint is going to be hairy… For really nice work, refer to tools like Maya and Blender, described here,