Read it through once
If you cannot, reconsider the whole story from the beginning, with special reference to the rules which are here laid down. If necessary, rewrite the whole; or, if necessary, put the whole into the fire, and, without being disheartened, begin again with another and a better story. Do not aim at producing an absolutely new plot. You cannot do it. But persevere, if you feel that the root of the matter is in you, till your work is accepted; and never, _never_, NEVER pay for publishing a novel.