the color adjustments here look to me to be yellowish - sunsets tend to be a brilliant orange or red.
personally, i do not like to tweak daytime colors to look like sunset, i would rather wait for the correct light, because you have to experience many golden hours (i.e. sunrise or sunset) to understand that digital enhancement to emulate this glorious period of the day is never ever going to come even close to the real joe.
that aside, control of exposure - the sky is slightly blown out here, i would lower the exposure by half a stop (by whatever means).. it is my preference to actually extend the shutter speed here drastically, probably by means of a strong ND filter, so that you have a smoothed out water to contrast with the "static" tree
cheers!