People don't hear themselves as speaking with an accent.
"Accent" is always an outside judgment--one person's experience
of another person's speech. So if you try to write first person
with an accent, you create POV confusion right away.
Grammatically it's first person, but it sounds like a third
person account. I recommend not trying to spell words the way
the character sounds (and especially not the way they sound to
someone else). That always slows the reader down, and greatly
increases the chance of popping readers out of their fictional
trance. Instead, write what the character would write (if they
could write). Illustrate the character's education, class,
roughness, and attitude not by spelling words the way they sound
to others, but by the character's choice of words and grammar.
There's no need to misspell words even if the character would.
(You can get away with that once or twice, but a little goes a
very long way.) Now, when the narrator narrates other
characters' dialogue, you have a little bit of