Help, ive messed up my hmwk?

we had to trace and colour code a detailed pic for dt hmwk. I attempted it, it took like an hour to do when its suppost to only take about 25 mins. anyway ive messed up coz it looks really messy and un neat. the pic doesnt look anything like the origonal, and the colouring is scribbly and like a 6 year olds. im gonna get battered coz he ecpects high standards. am I worrying over nothing? he is mean...