I wrote my first words in kanji!!!

@Trevor the dragon no worries! You've done nothing wrong, just a little bit of confusion on the terms ^^

@The AnimeFreak depends on how you write it! 先輩 is the kanji form of senpai, though it can also be written as せんぱい and keep the same meaning.

@Shiny Lyni are Sen and Pai kanji?

Thanks....sorry I'm still learning...I've got a long ways to go...

These are actually katakana; kanji are characters (like what you wrote for name) and not syllabic, katakana is one of the two Japanese syllabic writing systems used for western words and for emphasis when writing. The third writing form, hiragana, is the other syllabic writing system and typically used for normal Japanese words in conjunction with kanji.

Examples of the three:
心 - kanji for heart (kokoro)
こころ-hiragana for heart (still pronounced kokoro)
ココロ - katakana for heart (also pronounced kokoro)