Turn the CAWI back in, so youdo not violate the Code of Ethics.
The take the WIT and read the areas where you missed questions. Find the areas where you are deficient, and brush up on them intil you understand them intimately.
For the Code Book section, re-read the code twenty pages every day, until you are ready to re-take the exam again. Read the D1.1 Section of the Forum every day, if you took the D-1.1 exam. Use the index everytime, either before or after you read something, and follow up reading the other references on that subject.
For the Practical Exam, study the artificial code book that came with the exam. Re-take the HOT training before you take the test again.