Ethan's eyes were still closed and now he could sense his Mana flow, he could find his Mana veins and more his Mana around his body, but that was still inside his body so he started with his hands.
Ethan enveloped both of his hands with Mana and held it for some seconds, he did it for ten seconds, then twenty but before he could reach thirty Ethan lost focus and lost control of the Mana causing it to slip back into his body.
'Fuck this is harder than I thought, I can't even keep the Mana around my hands for thirty seconds'
(That's because you didn't learn to control Mana first before learning to cast spells, why not start with something easy for yourself, like physical training)
'This night I'll join Edith for training, and maybe she can teach me more about lightning'