@Knacki
Wow, congratulations! You did most complex landscape painting on this forum as far as I know. And you did it pretty well, all elements are there, painted in great details and painted well.
But I think, they are little out of sync. You gave almost equal attention to the whole painting at once, as I guess Taron's comment was about. What I would do is to focus which part of the painting is of greater importance to me (is it castle, bridge or some fuzzy path through marshes next to bridge and to the castle). Once I have that established the other parts of paintings are then of less importance and must be subordinated (painted in less details, less saturated, put in shadow or some elements like haze, fog etc.). The most important part is then focused (illuminated, saturated, contrasted with negative painting, negative shapes etc.) and/or painted in great details. The viewer should be guided through painting and kept there in loop as long as he can withstand (the longer the better). This whole process is grown from the very beginning, when you starts with speed sketch. I think first sketching shapes outlines with pencil-like brush on only one layer may be a good approach to this, to keep painting as a whole. Then building up contrasts with lights (i.e. atmosphere), colors and shapes etc. to emphasize and subordinate with opposite (this can be on as many layers as you like).
Please don't get this as a preaching, but as a fellow artist constructive critique. We are here to help and to push each other to conquest inch by inch our everlasting dream, which is to enjoy in our paintings and to learn more with each one we painted. You have great potential and energy!
Let's finish this constructive preaching (which is much much easier than paint anything) with two lines from great Irwin Greenberg:
Analyze the work of great painters. Study how they emphasize and subordinate.
Prizes are nice, but the real competition is with your performance yesterday.