Don't be afraid of the big bad Bias! I used to be and then found a great way to make it easily. I want to share it with you.
Bias tape takes a good bit of fabric, but it's still less expensive than buying the pre-packaged kind. In my estimate and experience, you can make approximately 5-6 yards of bias tape form 1 yard of fabric.
Okay, let's begin.
Lay your fabric on a flat surface. Open the fabric RIGHT side up and note the natural crease (this is the crease that's made while the fabric is on the bolt). Lay the fabric so the crease is vertical in front of you. You will also know it's the correct way when the selvage (the edge of the fabric that is woven to prevent fraying) is on your right and left.
Next, pick up the left selvage at the bottom and fold it over to the right selvage making a 45 degree angle. You know this is right because your right selvage will be under the bottom raw edge and the left selvage will be at the top now. You will also notice it is uneven. It's supposed to be, it's okay. You're doing fabulous.
Next you will run your hand along the fold and make a crease. Take a yard stick and a marking pencil and mark along this new fold on the WRONG side of the fabric.
Next you will open the fabric WRONG side up so you can see the line you have drawn. Depending on the size of bias tape you need, continue drawing lines on the bias. (Example: For a 1" bias tape, you will need to draw lines 4" apart. 1/2" bias tape will need 2" strips, etc.) For this tutorial, I'm making 1" bias therefore making 4" strips.
Cut your strips.
Take two strips and with RIGHT sides together, line up the diagonal edges. This should look like a frame. Pin to hold. Sew a 1/4" seam. When you open to press, it should be a straight line of fabric. Continue to sew as many strips together as needed for the amount of bias tape you need. If after sewing, you notice the edges of the strips don't line up perfectly, that's okay, don't panic. It will all work out once you begin ironing.
It is time to fold and iron the strip. Fold the long edges lenghtwise or in half with WRONG sides together and press. P.S. Don't judge a girl by her ironing board. Mine works hard. :D
Your strip should be half it's size now. Open the strip again and note the crease you've made. Fold each raw edge in to that crease and press again.
For good measure and to make sure the tape stays in place, fold along the original crease and press again.
The two ends of the bias tape will be uneven. Cut them off to make them flush.
COMPLETE!!! You did it. Wasn't that incredibly easy? I'm so proud of you. Great job! Now, go on and make something marvelous with your bias tape.
I hope this tutorial helps ease your fear about bias tape.