A little suggest I can say to you it's to remove Shrapnel Blast just because you haven't any artifact to sacrifice and use it. I can also recommend to you (if you wanna make a burn deck) to play another 2 copies of Lightning Strike and another one of Magma Jet .

Blinding Flare it's just useless, you will use almost of the time Aqueous Form , so it isn't really necessary have a second card that done the same thing only for a turn.

Last one, leave Nyxborn Triton and add another copy of Guttersnipe /Satyr Firedancer . In all this ways, the deck size will be reduced to 60, that's alright a nice thing. I hope I've helped you =)

I think changing the amounts of your cards to 4 would make the deck a lot more consistent and makes it hard for your opponent to kill your most important Threaths. Also the combination of Sigiled skink with the flamespeaker adept should not be underestimated.

I would add stormcaller of keranos so u can consistently activate flamespeaker adept... and it is a good aggressive threat :)