"But mind your posture", Val said, swapping the leg which was crossing the other. "Try to push your back in and your chest out more".
"Ah -- like this?". Adrien tried to follow Val's advice, and spun another spell - yet the flow of magic was weaker and his motions less graceful. "No, that's not it...".
"Not so rigid", Val said, and he came to Adrien's side. "When you work with Fire, you should move as if you are aiming upwards... Especially with your chest. Try to create two curves with your body, mirroring each other". He gently pressed one hand against Adrien's lower back, pushing it upwards; he set his other hand on his chest, spreading his fingers to encourage him to take a deep breath. Adrien followed Val's guidance the best he could; but, as his chest expanded under Val's hand, all he could feel was the contact of his fingertips on him - and his own body's answer to that call. Val's gaze landed on Adrien's red face, so close to him; his eyes widened. "Ah...", he stammered, "...what am I doing...".
"It -- it's fine", Adrien gulped. "More than fine...".