Take a longer stick and round the tip. Carve or saw in an incision around the diametre.
Carving towards the incision, form the stem of the shroom.Carve another incision, this time a V-shaped cut. When you have cut halfway through the wood, do another cut, this time at a right angle. This will be the bottom of the mushroom. Now carve towards the right-angle-cut. You can even form the top of the next mushroom that way. Do not carve all the way through.
Simply snap off the mushroom.
You can add tiny shavings below the head. There you go, a little mushroom.
Always use proper caution and have fun!❤️