cool stuff julz, i dig the non-blue ones - the red and white snow seems to have the most visual impact. However its good to experiment with the hues.
I find for some reason I find images with a 'blue cast' are hard to get right- someone told me that blue has the most 'noise' of all the colours. Its why you seldom see folks using blue filters on cameras. Also when converting colour to b&w I tend reduce the blue channel quite a bit too.
back to your image, very nice composition. the curving makes the eye wander the length of the photograph. I agree adding a bit o' snow would be cool as suggested. Also taking a big ol bite out of one the apples in the progression would add alot of character to the compostion as well (idea comes from a pic from last months competion). Perhaps show one of the apples sliced or Find a rotten/bruise to put in the progression? Possibilities are endless with type of shot