Nice job.
On a cutlass, I usually have a bit more beef in the tang, and a blade a bit wider and heavier. It is basically a chopping/slicing type sword, and needs strength and heft.
I would suggest that you should have drawn the tang back at the width of the ricasso, tapering it to a round threaded end. Two small shoulders at the ricasso will seat the hand guard. As it is the sudden transition to a 1/4" tang at the ricasso would likely fail in a hard chop.
The grind on the blade looks a bit undefined in the photos, showing a look of hammer marks ( maybe it is the lighting?). The bevel should be either a sabre grind or an FFG. Keeping it crisp and flat will both help in cutting as well as greatly increase the looks.