Accents are very easy for me. With me, it's clothing and makeup and hair and all that stuff that inform how the character moves and feels.
My accent has changed my whole life. When I was younger, it was very Nigerian, then when we went to England, it was very British. I think I have a very strange, hybrid accent, and I've worked very hard to get a solid American accent, which is what I use most of the time.
Having a sweet, wide-eyed, awkward character is more charming and allows for more range. If you come from anger, you're going to reach a ceiling very quickly.