Finished, a.
Polished to the highest degree of excellence; complete; perfect; as, a finished poem; a finished education. Finished work (Mach.), work that is made smooth or polished, though not necessarily completed.
Shades of meaning
Fernald has no entry of its own for finished; he lists it under perfect.
Where he writes about it:
That ends, or is ended, of which there is no more, whether or not more was intended or needed; that is closed, completed, concluded, or finished which has come to an expected or appropriate end. — from end
A speech may be ended almost as soon as begun, because of the speaker's illness, or of tumult in the audience; in such a case, the speech is neither closed, completed, nor finished, nor, in the strict sense, concluded. — from end
To finish is to do the last thing there is to do; as, "I have finished my course," 2 Tim. iv, 7. — from end
Finish has come to mean, not merely to complete in the essentials, but to perfect in all the minute details, as in the expression "to add the finishing touches." The enumeration is completed; the poem, the picture, the statue is finished. — from end