Attempting to raise these without some preparation will most likely lead to frustration. You need to have greenwater ready, either bought or prepared, you need to start a rotifer culture, you need a larva trap or at least be prepared to syphon the larva out as they are hatching, and a small tank to hold them in.
I would also suggest that you let this hatch go, get a book on raising clownfish, do your homework and prepare for the next ones. Once clownfish start laying eggs they are pretty regular at it. Mine now lay eggs about every ten days so three days after hatching they already lay new ones.
Water changes would have a greater impact on larva than they would eggs, so if your water needs changed do it sooner rather than later.