I've never used the Brickie tool, so I can't really comment on it's use, but the brickwork looks OK as far as I can see in the photo.
However it does look like you have got a split course at the top of the door jambs. Was that because it's difficult to adjust the bed joints with the Brickie tool?
You can't adjust the joints with the Brickie, but cut bricks are more a result of my lack of confidence and experience - I just started on top of the trench fill foundation and hoped for the best!
Part of my next project is to infill the"missing" corner of the house in front of the front door and I'll need to tooth in and match the joints to the existing imperial Accrington's with very thin (about 5-6mm) joints so the Brickie won't work there - I might make my own - it's really only a piece of plastic with a slot in and some guides so easy enough to knock up in plywood with the correct joint thickness.