Firesword (?)

Anyway, do you guys think I should remove the grey space around it? (it's because my art diary isn't A4, it's A5) There's more on the way in this art diary which is why I'm asking.

The bottom right is... um... I don't really know, just something I came up with... the emphasis is more on the top one and the 'explosion/firework' left/middle.