Hi Vivek,
Thanks for the PM buddy. :)
This looks far better tightly presented. The only other info you should add is the camera and lens to the exif data, that makes comments even fairer I suppose and more relevant. :)
To answer your question about the acronyms, you ought to check out
this thread, as it has a good collection of the ones the members here use pretty regularly. HAP means Head Angle Police and is led by the notorious :D Arthur Morris (just kidding Maestro M.) who will clearly tell you (gently of course as per BPN credo) if your HA or Head Angle is off by even 0.75 degrees from ideal. And rightly so, after all he and we (fellow members) all want everyone to be the best they can be. So you now know! :)