That's a good idea, @CrochetBug. I don't have any tips I'm afraid, @lucysmam - I just knit my socks one by one and don't compare them too closely afterwards
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@givemebooks - I've blocked a few things, but not many. I've done it different ways depending on the item and the advice on the pattern (if any). I think maybe it depends on whether you're just blocking it to get the stitches to settle and sit nicely or whether you're looking to actually shape the item.
So for my sleeveless jumper, which was quite heavy and didn't need shaping, I immersed it in water, put it between two towels to press most of the water out, then just lay it out on a fresh towel to dry. That made the Fairisle section flatten and look more even.
But with finer, stretchier things like shawls, I've sprayed them with water until damp, then pinned them out to the right shape using T-pins and a foam mat.