If you also have about a 15 lb doggie who could use a sweater, here's how I made this one. This is the DAK design for the sweater back. You certainly could knit it plain, do stripes, design your own instead.
My tension with some sport weight Tamm yarns was 7 stitches and 8 rows to one inch @T10 on my 970 standard Brother machine. I centered the DAK .stp design on the needle bed and only used 84 stitches and 96 rows of it. If you need more stitches and rows, they are there for you. If you would like the DAK design, write to me and I will email it to you.
Below are schematics, very not to scale.
DAK notation--at row#, decrease or increase #stitches every so many rows, #times.
Example--at row 5, decrease 1 stitch (both sides) every 5 rows twice (on row5 and 10)
HEMS-bottoms of pieces, use waste yarn and knit some rows. 1 r ravel cord. Insert main yarn, at tension 6 knit 12 rows, at tension 10 knit one row, at tension 8 knit 12 rows. Pick up stitches across above waste and hang onto row in work. Use design until top hem. I didn't put a design on the underbelly piece.
For hems on tops of pieces use ravel cord to mark the row you want to hang up. Reverse the tensions. First T8, 1 r T10, last T6. Hang stiches and bind off with your favorite method.
My fractions of an inch are not exact, but it shouldn't matter. One hint to make the thing fit better in the armholes is to poof out the back area a little more than the underbellypiece. Otherwise I think it's pretty straight-forward as to how to sew the pieces together.
As I was knitting this, I had all sorts of problems that I usually do not have. There were dropped stitches and mispatterning. My aged mind finally figured out that I needed a new sponge bar. I had a spare that I inserted but it too was not in perfect shape. Since it was a tad better I was able to finish the thing but there were still some pattern errors. (don't look too closely.) Right away I ordered a new one from Cindy's Knitting Room in Princeton, MN. I wanted to mention her business because she is so nice, prompt, fair and reasonably priced.
Write to me if I haven't explained very well.