Thanks everyone. Pen, yes I am going to do another, started it today. This time I'm going for a long sleeve t shirt, using a black one I already had I'm sewing panels cut from a red t shirt onto the inside then I'm going to 'slash' the long sleeve black t shirt so the red shows through.
I'm finding (for the moment at least) that sewing requires a fair level of concentration so with some music on too it helps push back other things in my mind, they're still there but just off in the background somewhere.