My first thoughts about this is Jazon's journey to find the Golden Fleece. It is a slight shame that the composition is tending towards the left side, because of there being more objects on the left. There is the wires, the bit of earth and the skull is on the left - there is nothing countering it. As to the background - the furthest subjects are slightly incorrect because of the hills being so close to the edge - you might need to be more decisive. Either cut the space between the top edge and the line of mountains or give them some more breathing room. The colors are good and well picked, however sometimes there are slight burn outs for example in the skull, some in the wire and the white waves too.
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