A classic crew neck can finish off any 'fit. When in doubt, a classic crew neck sweater is the perfect finish for any outfit. Keep things casual by wearing one over a plain tee and your favourite style of jeans, or style it up by wearing it with a collared shirt or adding a bomber jacket over the top. If you're not one for patterns try a knit or fluffy texture to add some interest, or keep it simple with a plain block colour and a necklace to draw the eye. If you prefer boxy lines, an…