Look at the landscape through your viewfinder - check for anything you don't want in the frame, such as telegraph poles, people and cars. Try to extract them from the shot by moving left, right or using the zoom. If you can't, fear not.
Alternatively, move your position to incorporate something in the foreground. A friend or a tree can add depth to an otherwise flat shot. It's a good idea to force your flash to shoot (look for the lightning symbol on your menu). This will highlight your foreground element and lift it from the background.
If there isn't a foreground element, turn off your flash. The effective range is only about 5m and it may ruin your shot. Now pick the ‘sunny' WB (white balance) setting - look for a sun symbol. Some cameras have an ‘overcast' setting, but it's a better option to simply select a bright moment to shoot (above left).