This is another T-shirt illustration I made for my other niece. Again the animals are from her Webkinz collection and the T-shirt printed through Zazzle.
The creation process involved inking a pencil drawing with a brush, the scanning and converting to a line art tiff file. I converted the vile to vector format using Inkscape. I used to use an old version of Adobe Streamline. The thing I like about Inkscape is it makes all the white areas transparent, making it easier to color in Illustrator. My version of Illustrator is several years old, so the newer versions probably have improved bitmap vector converters.
The colors are added in Illustrator using different layers. Drawing and editing shapes in Illustrator and layer control are superior to Inkscape's in terms of ease to use. Because my old version of Illustrator does not support PNG I have to export to SVG format, import into Inkscape to export once again into a PNG file, which Zazzle prefers. Clear as mud?