(4.5) its a good start. tips to improve: first, take a better picture. the photo itself has a big impact on overall score, and flash photography does all kinds of bad things to your paint job. second, shade (with black) more. blacklining is an excellent technique for beginners to learn.
very good for the first try. do not worry about the low score, everyone starts this way (i did even worse!). :)
id really like to encourage you to keep on learning, one day youll be as good as the rest or even much better. ;)
one hint: dont become too fixated on drybrushing, its a good technique for beginners, but you should learn highlighting as soon as possible.