The 1/4 inch bias stem is the one I use the most in my applique.
Using the Clover bias maker.
1. Cut your fabric on the bias, I cut a square depending on how long you need your stem ( average 12" x 12" square ).
2. I use spray starch to starch my fabric and let it dry, or dry with the iron.
3. I cut the fabric on the diagonal from corner to corner using my 45 degree angle on my ruler against one side of the fabric to make sure I have a definite 45 degree angle.
4. If using a 1/4 inch bias stem maker I cut my fabric stem 1/2 inch wide on the bias. ( Whatever size bias stem maker you are using cut you fabric double the size ).
This is what you should end up with.
5. With the metal ( bottom ) side up on your bias stem maker, slide you stem fabric through the slot, using a pin, awl or anything with a point pull the fabric through the other end.
6. Turn your stem maker over so the green side is facing up, while gently holding the stem maker with your left hand, slowly pull the stem maker to your left while holding the iron with your right hand on the end of the stem that is coming out the end of the stem maker and gently press keeping the iron close to the end of the stem maker at all times.
7. Your finished stem should look like this.
I hope this tutorial has been helpful. If you are left handed please reverse the position of your hands and iron.