The key is which kind of schools you want to apply?
If you want to get into a less famous school, your essay may not be so important, but of course, you still have to accurately position and market yourself.
If you want to get into a top US or Europe school, almost all of your hard and soft wares are very important. ALso, it is too late to apply for the top schools.
There are many consulting institutes you can search for. But the key is your own goal and interests.
