How to Construct a Four Patch Block

 Cut four squares to your required size
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Sew into pairs, you can chain-piece this bit to make things a little faster....
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Press seams towards the same colour on each unit
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With seams pressed in opposite directions, your units easily lock into each other.
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To reduce the bulk in that centre seam, snip a couple of stitches just at the top of the joining seam. This will release the seams so that you can press them in a rotating fashion as in the picture, and will allow them to sit flatter in the centre of your block.
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Open out and ta-dahh, you should have perfectly matching points, with no bulk!
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