The best thing is to scan the image, but if you don't have a scanner, try to take a photo of the drawing with a smart phone. It is important that there is enough light, and that it is quite even.
When the image is saved yo your computer or phone, go to an image uploader.
Tinypic.com is a popular one. Choose any size except avatar or thumbnail. Then you should get a better version of the image than the one above.
smile Hope you enjoy the holidays, see you when you have internet again!