this is looking great
the stone bump works really well (especially around those round pillars near the gate), however the bump on the square corner to the left seems too harsh, the rest is brilliant and you shouldnt change the bump depth or anything, just fix that front left block up either by applying different settings just to that part or by editing in post production.
also i still think the lighting could be more dramatic (mainly more contrast), i edited your pic again (hope you don’t mind but i love playing with your castle in photoshop). This might be a little extreme but i think it looks more dramatic (i also made it more widescreen, it looks a bit funny because I had to stretch parts of the image)
hope i help