[Elecraft] OT: QSL reply to a SWL Enthusiast

[gehringc at charter.net]

I received a QSL card from a SWL Enthusiast in Switzerland, he copied my KX1 2 watt QSO and has requested a QSL card.  Since this has never happened to me before I am not sure what to put on the QSL card.
Should I fill out the QSL information with my contacts information and then add my comments to him in the remarks section?
I apologize for the band width but I would like to send the card with the appropriate info, and this is a first for me.

73 K2CG
Chuck G.
This is the bottom of the Solar Cycle isn't it?