Nothing too bad, but could be better
As pointed out, it's uneducated and not ineducated, and it isn't English, it's British. Language can be English, design style can be English, but nationallity, accents and people are British.
Outside of that, the author has an art styling all his own which works very well for the humor presented in the movie.
Sound could be slightly better, but at least one can understand what is being said.