I wanted an easily replaceable toe guard for my roller skates. This is attached with the toe stop and the first lace holes on the boot. My feet are pretty big, and my skates are a size 11, so I don't know if this will fit smaller boots without changing the dimensions. I've included the fusion360 file so that anyone who wants to mess with it can. I did not include the skull motif, because that's my logo :]
To attach, remove the toe stop and laces from the boot, line up the largest hole on the guard with the toe stop hole on the skate plate, and screw in the toe stop most of the way. Then line up the two holes on the side flaps with the first lace holes, then fold the center "tongue" over the side flaps, insert the shoe lace over the central tongue holes and through the side flap holes into the first lace holes nearest the toe of the boot. Ensure your lace is centered so that both sides of the lace are of equal length, and finish lacing your skates. Then be sure to completely tighten down the toe stop. Done!