Ok, no return edge at all at the wrist end.
One place you could leave, or should I say can leave the return edge is at the elbow end on the outer half. If you left it on the inner where you bend your arm, you are going to get armour bite. (Skin gets pinched between bicep and fore arm) and it hurts.
As to the fitting of the forearm, again at the wrist end it should be a squeeze to get your hand through. You want your armour to fit you well and not be too loose, and yes the forearms may seem a little short so nothing to worry about there.
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