Supposed to be a quick sketch until I decided to color it. Spent the majority of the time on that unfortunately... turned out ok.

On a side note, if you use alot of layers on a large canvas in shi-painter it's going to crash if your java is left in it's default setting. I found this out the hard way by ruining an advanced piece when I did a safety save after java ran out of memory. 2 hours of linework disappeared and no the undo button won't fix it and I had about 9 layers all mashed together in a big mess.

Anyway, try adding this to the Java applet runtime settings in your windows control panel: "-Xms64m -Xmx512m" (remove the quotes)
-Xms <-- minimum memory size java will use I have it set to 64Mb
-Xmx <-- maximum memory java will use, mine is at 512Mb so adjust this according to your system (I had to do this or the advanced piece I was working on wouldn't even load!)
Java is set to only use up 64Mb MAX by default...which is easily eaten up by several full layers on a large canvas.

*This stuff may not make a difference if you use less than 4 layers so if it ain't broke don't fix it...