taken simply hours to draw up a design plan, start colouring it it, left it on your desk for a little bit while you did some (gasp, shock, horror) housework and come back only to find that some little visitors (ie Best Friend's Kidlets) had helped you to colour in?
Such happened to me. I'd drawn up the placement of DH's whirligig quilt (yes it's almost at the sewing together stage) and had done about 1/3 of it. I came back and thought "Hmm I didn't allocate those colours to those fabrics.". On closer inspection about 10 more whirlis had been coloured in by a helper. I was in tears as I had to go through each individual fabric again, counting off each 9 whirligigs....Ooooh the pain of it. Suffice it to say I have finished it now, embedded it in plastic and BANNED colouring pencils!