I have been doing just what the title says! I think I have hiragana mostly mastered (I always mix up re and wa (I think re is the one with the curl), and ha and ho (I'm pretty sure ha is the one with one line and ho is the one with two), and I can never remember nu, but all others I have down) and know how to conjugate verbs and adjectives and attach sentences with demo and soushite. I do have a bit of a hard time with complex sentences, but I'm sure I'll get better with practice~
I tried looking at the Japanese Test on Animelyrics, but I really don't know kanji except for hito and ichi, so I don't think I could pass it. If someone could help me with that, I would be grateful, since I would love to be able to translate lyrics and help out the site.