So, it is not like you should complete 1 year before you receive an ITA?Ideally, you should be creating the profile when you are completing or about to complete(1-2 days). Creating the profile earlier, you will take an ITA from the possible candidate and rob him of his chance. But again, you are allowed to create and then once you have an ITA, you can submit the docs after you complete one year.
PS : with 451 score, you will be picked in any of the draw happening going forward(Biweekly)
C
Shan