The other thing he might ask you to do is set the camera tilt to 0°. Having a tilted camera when viewing the panorama is a bit trippy because the horizon will sway as you pan around. (I'm guessing it's about -2.25° here). upon Infinity's suggestion of moving closer is also possibly a good one, but that will partly depend on what the vertical field of view in the playback will be and/or whether the viewer will be able to control it. Generally speaking though, for spherical panoramas it's often more effective to get up close and personal to the main subject.
Couldn't resist having a play with this and making it a "little planet" (stereographic projection with a pitch of -90°)
And one last tip... Whatever size image he asks for, add an extra 2px to the width and then crop 2px from the left hand edge of the image. There is a small processing artefact on this edge that will show up as a thin vertical line when the image is wrapped (e.g. thin light line going down from the centre in the attached image) For the last pano I made I also cropped 2px from the top and bottom, but I didn't verify that this was actually necessary... the last update did fix the main glitches that were present at the edges when using the spherical camera and I was just being over-cautious/lazy/impatient.
