Hi Hensil,Nice panning.
In panning shot you need to get the main subject sharp. The trick is to use a fast enough shutter speed while panning so that the main subject is sharp but the bg blurred. The shutter speed depends on the motion of the camera. Trial and error is the name.
Henry
PS: how is your D750 turning out? There is a noise on the web regarding some issue with flaring. Check your camera for that. You'll get free service.
Nikon acknowledges 'issue' with flare in some D750 bodies: Digital Photography Review
I am glad you liked my pictures Henry.I watched your Singapore TL. It's simply beautiful.
You can fix the dust spot in the pictures in LR. Clean the dust in one picture and apply the setting to all as the dust is stationery.
Henry