To estimate your level of proficiency, start at the lowest level and respond to each statement. For each statement, respond “yes” or “no.” If a statement describes your ability only some of the time, or only in some contexts, you should answer “no.” If you answer “yes” to every statement in the level, your ability is probably at least at that level. Move on to the descriptions at the next level. If you answer “no” to one or more statements, then you are likely not at that level.
If you answer “yes” to all the statements at one level, and have a majority of “yes” answers at the next higher level, then you may be at a “plus” level. For example, if you answer “yes” to all the statements at Level 1, but have a mixture of responses at Level 2 (almost all “yes” answers), your self-assessed ability may be at Level 1+.