Designing mitten patterns to sew is actually quite easy. Mittens are a fun craft that do not even require a sewing machine. They can be hand stitched, if desired. You can be very creative with fabric choices and designing ideas to come up with some very interesting mitten patterns.
Mittens have a very general shape. You can make a basic mitten pattern by simply using your hand, a piece of paper and a pencil. Lay you hand, palm down, fingers together and thumb extended slightly, on the paper and trace, starting at your wrist. Trace the outline of your thumb and then draw around your fingers in a half circle for the mitten. Finish tracing down your wrist. Now that you have the basic shape of the mitten pattern you will need to add some extra allowance for the seams and wrist cuff. You should extend your patterns by about one inch all around and about two inches at the wrist area. Once you have completed the allowances you should have a nice, usable, mitten pattern.
All you need in one pattern piece since the right and left hands will be identical. It actually is wise to use just one pattern piece so you are sure that both mittens are identical in size and shape. You can design many different sized patterns using the hand of different people to trace your pattern. If you decide to do this then you should mark each pattern with some type of identification so you know the general size of each finished mitten.
To actually make the mittens you will need a small amount of fabric. You need to transfer the pattern and use it to get four different fabric pieces. You will take two of the pieces, wrong side of the fabric together, and sew them around the edges together. Do the same with the remaining two fabric pieces. Now you should cuff the bottom of the mittens and hem it in place. Turn the mittens right side out and you are done. You can then embellish them, if desired.
From your simple mitten pattern you can come up with various deigns. You do not need any more mitten patterns to sew many different styles of mittens. You can simply create new styles by using different fabrics and adding embellishments, like buttons, raffia or even embroidered designs. You are really only limited by your imagination.
If you don't already have one, buy a used sewing machine and make sure that you will enjoy and stick with it. As you learn the techniques and become skillful, you may decide to spring for a new machine later.
Focus on learning one sewing skill at a time. Become good at that technique, then move along and learn the next.
Become acquainted with the tools you will need to become good at sewing. As you master one tool, start practicing with another and the first thing you know, you will be a sewing master!