Trial And Error
"First of all, Wanemyre said that the size of the circles matters, and you made it too big for a pebble. A smaller one would have been better to save ink and focus the mana.
"Also, you formed the mana sphere too fast, not giving it enough time to get properly imbued with magic. Then there is the matter of how you arranged the runes…"
Solus started nit-picking every single mistake he had done. According to his own earlier analogy, more like someone playing a symphony, Solus was making Lith feel like a button masher had attempted to go pro at fighting games.
Everything she said sounded right, and that made her even more irritating.
"Well, why didn't you tell me all of this earlier?" He grunted.
"How can I spot mistakes you have yet to make? It isn't my fault if being the wise one I am capable of learning from others' mistakes, while normies like you must stumble and fall before walking properly."