Got some beautiful clouds, birds and water. Nice effort, but it seems that u are enlarging smaller parts of your photos. Use a higher resolution if u want to do that, otherwise it becomes too noisy. Amitava wanted u to notice that the chimney shouldn't be leaning, i.e. u must try to keep the horizon straight.
Great sunset sky. The lean in the vertical structure (what is it?) suggests that the horizon is tilted. Also, could be a wee bit sharper - may be scan-induced softness.
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