Why Does this Keep Happening?

On Tuesday I popped into the LYS by my office looking for some Cotton Fleece for K. They didn't have what she was looking for, but I saw 3 skeins of Candy Apple Red that called my name. These skeins, the last on the shelf in this color, came home with me, of course. I had no idea what I was going to use the yarn for, but a tank top seemed like a safe bet. Surely 3 skeins of yarn with 215 yd a skein would be enough for a tank, right?

Since the weather here in Boston has gone from cool to hot, pretty much over night, I had an immediate need for a new tank so, on Wednesday night I started looking over several issues of IK to find the tank that would interest me. I settled on the Lotus Blossom Tank from the cover of last summer's IK. The original tank, in my size, called for 3 skein's of SWTC Bamboo yarn, each skein of which contains slightly more yarn than the Cotton Fleece, but I decided I would be safe anyway.

I then decided to make some modifications to the pattern. The first modification was that I added a 5th repeat of the lace pattern (see left) to make the tank longer (my size called for 4 repeats, the next size up called for 5). Next I chose to add additional decreases in the stockinette portion of the tank, so that it would fit a little closer under the bust. Then, I chose to add some bust darts (the first time I ever tried that). Unfortunately, the changes meant that I ran out of yarn with only one shoulder strap to go.