I'm getting my hair cut short next week (I can't wait!), and am thinking about colouring it too. Can you colour your own hair successfully, or do you miss bits, or is it easy to mess up?

Failing doing it myself, I could get my Mum to do it when I see her.

Thanks guys!
short hair yeah or above the shoulders or fine hair yep. Use old perfume to remove any dye from around the ears etc if ya get it there and use gloves. Best tho if possible to have a spotter to say hey u missed it here and put newspaper or plastic on floor incase of spillage and dont put the dye bottle directly on basin cover sink area with paper too. or old towel. I always come through after too.