eh I have tons of time told you how to define your icons, and daggers and weapons like that will NEVER get more, unless they make me think "wow" cause it's uncreative. There is thousands of weapons already. NOT CREATIVE, and we judge on that too. You define it by either making really high contrast. Lots of shading in the edges, and lots of highlights where the light hits. Else, you draw it up, with a black outline, or an outline that is darker, so you can tell the friggen background and object apart. THATS how you define it.