Chakra tests are for fun, and maybe a good starting point, but accurate? Doubtful.
Your chakras should all be open to the same degree [aka balanced] having an overactive chakra can be just as bad an an interactive one. An underactive throat chakra might mean your shy and don't speak up, while an overactive one could result in you being really chatty and open. Don't worry, we all have overactive and interactive chakras, but we need to balance them.
Take what you learned from this test and build off it. Start working with each chakra, opening each to the same degree. Since your heart chakra is open the most, you won't have to focus on it as much as say your crown. Be sure to start with the root up, the root grounds us, the crown opens us to the universe/spiritual doing it the other way could result in problems.