I like sending hand made cards to friends when I can. It seems more personal, and is almost like sending a mini present. Here are a few quick ones I made recently.
I little bit of burlap tucked between the sky and the green foreground adds texture and interest. A wisp or two of silk highlights the sky, and I finished with a few french knots.
The sky is laid horizontally, and the grasses roughly vertically. Merino and a little silk for accents.
In each case I laid the wool onto a large Clover needle felting mat, and needle felted sufficiently to hold it together, before gently wet felting. I find if I cover the mat, after shrinkage this makes a reasonable size and proportion for an A6 blank card.