Thread:Silver-Haired Seireitou/@comment-15389632-20140524143649/@comment-18812574-20140524164515

This one is great for names and stuff: http://www.nihongoresources.com/dictionaries/kanji.html

Type in the name you want, and it will give you a list of all the different kanji you can use for that name.

It might be helpful to learn some basic Japanese grammar as well, (when to use hiragana, when to use no etc.) that way you have a little better idea of what you're putting together. ;)