I did it for some "Hallo Lady Rin" cels I just 
liked before I met the mangaka. Now I love these 
cels with the signing and little drawing on and 
empty place of the sketch.
And this remember me how happy she was ro see 
cels from her "Rin-chan" and all the emotions I 
felt at that moment!!! LOL

Go ahead when you have the opportunity ^_~
Cheers
Almathea