A few pointers, decent chunk textures but they need to be scaled down. More or less smoke and a better dispersing effect of the smoke would benefit your particles, generally its classic to see just a straight up impact effect of smoke, but thats not how it works. It should disperse much more.. As for the sparks, they shouldn't taper at both ends, it looks like a double sided arrow. You need to make the falling end fat, and keep the tail end as it is currently.
And lets do it joe

Make the models and I'll make the galaxy or what ever, not sure what it looks like but it can all be done.

http://www.nomoreroominhell.comI don’t know whether I was right or wrong, I guess I’ll never know… But I made it. And I guess I should be thankful for that. - Strelok
Has anyone really been far even as decided to use even go want to do look more like?