On my quilt labels, I include:
Quilt name
Made by ----
For ---- (if it's a gift)
Date
City/State
If it is for a special occasion, I might say something like, "Made for my dear Dad, Ernie Bonkers, on the occasion of his 91st Birthday".
For care instructions, I say:
Machine wash on gentlest cycle, using cool water and a mild soap such as Quilt Wash or Orvus Paste.
Line dry in the shade.
NOTE: My quilts are all machine quilted, and can be gently machine washed. I can't say whether this applies to hand-quilted quilts. Quilts with inadequately stitched-down fusibles, or with embellishments, are a whole nother ball game. Care instructions depend a lot on your particular quilt.