[1.7.10] Can't figure out IItemRenderer

So I'm trying to make my item render as paper, and then on top of that it will render a half sized version of whatever item it was crafted with (Sugar if it's blank) However I can't figure out what to call to get it to render something there, whatever I try it messes up in one way or another, if someone can give an example or point me to a tutorial on how I could do something like that, that would be nice.

public class FoodprintRenderer implements IItemRenderer {

private ItemRenderer render;
private ItemStack paper;

public FoodprintRenderer(Minecraft mc) {
	render = new ItemRenderer(mc);
	paper = new ItemStack(Items.paper);
}

@Override public boolean handleRenderType(ItemStack item, ItemRenderType type) { return true; }
@Override public boolean shouldUseRenderHelper(ItemRenderType type, ItemStack item, ItemRendererHelper helper) { return true; }

@Override public void renderItem(ItemRenderType type, ItemStack item, Object... data) {
	// Paper
	// Small Sugar
}
}