I am a 32/34" bust and here are my alterations to the pattern. Numbers in () are the old numbers for the smallest size. I only typed out the parts that I changed. I am giving myself the reccomended 4-6" of ease for a pullover which will make this 38" when completed vs. the 48" for the smallest size given.

Back:
Cast on 86 stiches (110)
Back should measure 13" (16")
Armohole Shaping:
Cast off 4 stitches (5) w/ 82 st left (100)
Shape Shoulders:
Cast off 26 (30)
Leave 30 (40)
Front:
Work until 2" (4")
Shape Left Neck:
Knit 41 (50)
Measures 5.5" (7")
p7 (p10), slip 9 (12)
Dec until 26 (30)
Armohole measures 8" (9.5")

Sleeves:
I won't know how many to cast on till I use the completed front/back to see how I want it to fit, but with the body changes you want to build up to 72 st (96 st) and I'm going to measure till about 16" and then cast off 4 (5).

It took us about an hour to figure all that out..