How is this for a start?

You are sitting in your chair and I kneel in front of you.
I places my hands on your knees and look into your eyes and smile.
My hands start to tease their way up and down your shapely legs
from your ankles to your thighs. Back and forth slowly and gently.
Then I pick up one of your feet and bring it up to my mouth where
I begin to lick and nibble at your ankle. Slowly I make my way the
inside of your leg till I reach the hem of your skirt
From there I start down your other thigh till I reach your other
ankle. There I start my way back up again.
All the time I am watching the look on your face and listening to your
breathing becoming deeper.

After I tease you for a while I would slid my hands under you skirt
and raise it above your hips exposing your panties to
my hungry eyes. Then I begin softly kissing along the hem of the thin and now wet material. I feel your hands as they grab the back of my head and pull me into the center of your parted legs. I blow my warm breath over you and feel you shudder. I can smell your sent as I lightly lick you
through your panties.

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There's someone in my head, but it's not not me - Pink Floyd