The search tool is your friend:
"microfoam".
Some quick hints (I also own a Silvia):
- Few moments after you turn on the steam switch, purge the water from the wand until you get dry steam
- Wait for the heater to turn off
- Keep the steam wand on the surface of the milk (quiet high pitch aspiration sound, no big gurgling)
- As soon as you feel the milk is warm to the touch, raise the pitcher to sink the wand in the milk
- Continue until you can't keep your hand against the pitcher because it's too hot, it's ready. You can also do it by sound, the pitch will change as the milk gets to the correct temperature.
- Purge and clean the wand.
Depending on the shape of your pitcher, you need to place the wand in the right spot to create a whirl.