My first piece of felt was a simple square, which we made as a sample to show how much the wool fibres shrink as you felt them. (A lot.) I made the piece reversible, with a soft green on one side and a cream on the other side. Although my felting instructor assured me that my work was passable, she did warn that the felting police might not wholly approve of the fabric, which was not properly fulled. This means that the fibres are not completely felted together and the fabric may not keep its integrity with wear and tear.
I wanted to come up with a use for it, anyway, so I made a little four-petal template and cut flowers and a few leaves from the square. I fulled them a little more after I had cut the shapes, just to soften the edges up a bit. Then I stitched them onto a headband using a variegated silk thread that became a feature as the flower centres. (Or I should say, since they are supposed to be hydrangea flowers, that the template had four sepals and the silk thread represents the flowers. Just being pedantic.)
The result is not bad for a beginner, I think.