I did this particular picture last summer while on a half hour break at my job (but I'm sure it took slightly longer than half an hour).
It is currently in my sketch book and I've been looking for a scanner for the last week and finally found one! :-)
Now you all can see my FMA fan art....
okok, onto the art!
I used colored pencils for all the colors, and a felt pen for the black in the design.