Substituting Yarn

[sugaryb]

Hello all,

I wanted to know if anyone could help me with the following:

I am knitting a cape (found in Rowan Studio 13) which has called for the use of "Big Wool." I have found this wool to be quite expensive, so I have bought some "Little Big Wool" in the sales.

I understand that the wool I am using is quite different from the wool used in the pattern, so i will have to adjust my tension.

The pattern tension is 8sts and 12 rows, but the tension on the wool states 11sts and 15 rows.

What should I do to incorporate the difference into the pattern?

[sugaryb]

I forgot to mention that that pattern says I should be using size 9mm and 10mm needles but the wool