Not too bad. :]
I don't know what Photoshop 5.5 is like as I use Photoshop 7.0 but I can try and give you some pointers.
A good way to get really nice, clean lineart without a tablet is to use the Pen Tool. I hope 5.5 actually has this tool. o0'
There's a couple of really good tutorials that should help with lineart and colouring with the pen tool. I've used them and they really helped.
Lineart --
http://acaraluv.deviantart.com/art/line ... l-21814747Basic colouring and shading --
http://thazumi.deviantart.com/art/Pen-T ... l-63428363