Years ago (we are talking eons) I knit myself a couple of sweaters which fit. I never gave it a thought. I found a pattern and knit it up. I was a very very beginning novice knitter (redundant I know). I just liked the sweater and did it. Some years later, I took a knitting class and the lady who gave the class helped me "design" a pullover vest. I say "design" becuase it was just a simple v-neck, sleeveless, waist length knitted in the round vest.
Now I am scared to death to start something. How do I know it will fit. I was thinking of a cardigan, jacket sort of thing in a washable yarn.
If I take measurements, then how much bigger do I make the sweater?