Tried to search the Internet for this, but couldn't find it, I hope this isn't a redundant question. Does anyone have a template or something for those that may wish to add specializations? Something where I can input information for maybe a Specialization for a Fencer type or Pikeman type for some Homebrew systems? Or do I need to create my own? I'm pretty bad at graphic design, and so, feel like I'd botch it, however, doesn't hurt to see if someone else has already done it. Thanks!

Don't know about templates per se. But if you want the existing trees in a easily accessible and printable way, go here: http://beggingforxp.com/2014/star-wars-talent-sheets/

Maybe you can nick them to make a template.

Alternatively, I copied some trees into a personal excel sheet. Doesn't look great, but it serves its purpose.

Unless I'm mistaken, the Data Editor in OggDude's Character Generator allows you to create them.