I compiled the gimp for the n800, runs Ok. But after using it for a while i'm not sure if its the best drawing app for maemo. I did manage to compile another app for the N800 and you can get both the binary and the source (well for gimp also if you want to have a shot at compiling and using it) MTPAINT so far is much better than the gimp. karel jansens think it is what you are looking for also.

Now the other problem i have is...I cannot get this holdonizing thing down at all.
not very good at scripting, or coding, really understanding the danm thing.
I have the working source file for GIMP and MTPAINT, if someone that can hildonize wants to give it a shot...be my guest.

http://n800(dot)divshare(dot)com/

http://maemo(dot)divshare(dot)com/

I Think Neostrider from the #maemo irc channel on the Freenode network might be working more on the Gimp, he was very interested in the source.

anybody that would like to take mtpaint into consideration and hildon it....be my guest also....
or just download the binary(CompileandWorking) run the command chmod +x mtpaint and place it in the /usr/bin/ folder..