The horizontals of [B] DEFP extend beyond the horizontals by one half pen width. I seem to have omitted this feature on the top and bottom of B, which should look like the left edge of E, and R should look like P. Try it that way. Same with the inside of Q; the round end of the diagonal should be clearly visible.
This style is not fat but Zaftig--pleasingly plump. At four pen widths tall, it ought to look heavy and ponderous, but instead it makes me want to hug it. Like a plush toy, not a stuffed sausage. I haven't touched it up much.