You should create more detail in the foreground. Thinner lines in the foreground. This creates perspective. (Now there's more detail at the horizon.) Jean-Baptiste Corot put great effort in creating a sandroad that vibrated with tiny specks of colour. To this end he used palette knife. /Mats
Done! I purposefully made some artistic decisions that may not make seem logical. Yes, the head lights are on during the day and there is an eye in the middle of that tree branch. I was going for weird.