Here you can see the images used,
the camera was mounted on a tripod and i systematically panned left to right making sure to over lap alot. The building took 3 passes.
Always best to have more frames than needed, than have pieces missing down the line.
With each up date of Photoshop CC i have noticed that it is becoming much better at stitching.
In the past it would have not been able to do this, and for these cases i use Autopano Giga 3.0 stitching software, but photoshop managed ok with this.
Now by using a tilt shift lens, and/or a parallax tripod head, your job in post will be so much easier, but as i do not own either of these i had to make do. The majority of my time was spent straightening the stitched image.
As with all panos, shoot in manual, turn white balance off auto so all the images remain consistent.
I hope that this helps, and when you are trying to shoot a subject larger than your frame, that you remember this technique.
Thanks
Lee