25 Quick Cartoon Characters by Christopher Hart, I've added some colour and also a little piece of grass with a couple of flowers. All good practise in Inkscape.
Although I am currently working with cartoons, I still like to try and get practical and more or less accurate colours. For the Rugby shirt, I simple carried out a Google image search and then when I found an image I liked, I used a really handy desktop utility called ColorPic, which returns the hex code of any colour on screen. It's free and absolutely essential for any budding colourblind artist working digitally.