Some aspects of visible gender are social constructs; for example, what clothing, hair styles and jewelry are considered "appropriate" are socially constructed. At different points in history (also depending on the culture of course), flashy jewelry, makeup, skirts, long hair and high heels have all been considered completely masculine. So, honestly, wear what you like and what you find comfortable. There is no single, correct way to be "male" just as there is no single, correct way to be "female" despite what society and the media will push on us.