Hey,
(Address)
(date in expanded format)
Dear uncle,
Hope you're healthy and fine at your place. I'm fine too and i have just returned home after spending winter vacation at grandma's house. I had lot of fun there. My parents, brother and I went for skiing.
Just after skiing, I met my childhood friends there with whom my sister and I went on a picnic. All these experiences were really cool for me. Granny used to make delicious breakfast for all of us. And finally at night, she told us stories of your childhood.
She's missing you all too and wants you to visit her soon.
Yours lovingly,
park jisoo