This looks great. But a few things are, I noticed that Rarity's mane is flying up straightly, but her tail is still curly. And ponies in youth have their horns with a curved point, not a sharp one. And in the last panel, I noticed that Rarity's left foreleg is positioned oddly. So is spikes legs. As you can see, his rear leg (the leg closest to her tail) is hanging off the edge of her flank (sorry if this sounds wrong) but the toes are still straight as if he is standing on a flat surface. And on all the panels, Spike's eye colour is not shown, as it is always.