nice shot. what lens and body did u use? mind sharing the exif too pls? looks quite bright to me and perhaps need to increase shutter speed or lower the aperture
PP-ed this in cs4. minor adjustments to the the highlight/midtone contrast
i'd try the following:
aperture: F11.0. could try f16, but we dont want diffraction issues
xposure/shutter: start from 1/250 .... ADJUST this for brightness. faster ->darken, slower -> brighten
ISO: 100. keep the noise under control
if u're using canon lens/body: IS off, mirror-lock enabled, use timer/remote