A good illo overall, though a bit cluttered for my taste. On the other hand the Spartan furries _are_ in a phalanx, so of course they'll be close together...
For anyone else who arrives at this page: as the OP said, "300" is not true history; even the fight scenes are pretty unrealistic overall. As always, if you want to learn all about what really happened you need to find books written by reliable historians, & read them thoroughly. But for a basic intro to Thermopylae, the following YT clip ain't bad: