This pattern is called Whispering Creek Jacket, by Morning Glory Designs. I found it at my local quilt store. You could also get it on line. The instructions call for 8 different fabrics and a batting that you use as a foundation for the jacket. I used only six colors and as you can see, they are very vibrant. I will select less contrasting fabrics next time.
I purchased all of my fabrics and the batting, but it is possible you may have scraps from other projects. This would be a good choice if you picked a base color to match strips you might have leftover from a jelly roll. Choices you make for the batting should probably be based on where you live and what time of year you want to wear the jacket. You can use something as lightweight as muslin for the batting or as heavy as your favorite quilt batting. I used a flannel because I wanted it to be warm, something I could wear inside during winter months. If you are making something for spring or summer you could use muslin. If using muslin you will need to make the next smaller size because there is less bulk than the heavier batting.
There are four main pattern pieces, front, back, sleeve, collar. There are also front and back yokes, but you only use these pieces on the outer section. The diamond pieces are made by sewing four 2.5" strips together then cutting them on a diagonal slant. It takes two strips pieced together for the longer strips. The lining and the batting are cut from the four main pattern pieces. These sections are stacked together with the right side lining facing out. With the lining at the bottom, the batting next, place the center strip right side up, place the next strip face down over the first strip and sew 1/4" seam through all layers on one side of the strips. Fold the top strip over the seam, press, place the next strip right side down over the one you just pressed, sew along the edge again with 1/4" and continue until you have all of the surface covered. Do this for the front, back and sleeves, working from the center. This will quilt your jacket as you go. I made my collar from the same fabric as the yoke. I also added an extra bias strip to the bottom of the yoke.
Once all of your pieces have been covered with the outer fabric, add your yoke to the front and back. The next step is to sew the pieces together like you would for any jacket or blouse. To finish this jacket trim the batting bulk out of your seams, roll your seam allowance over and stitch it down. The last step is to sew a binding around the edge of the outside, and around the hem of the sleeves.