Arjuna was the greatest archer in the world, but not always! It took a lot of hard work, persistence, deep listening, reflection. Overall he was a really great student! (And a little bit annoying – he was always underfoot! But if he weren’t then he wouldn’t have been able to save Drona!)
Dhanurasana (Bow pose) and Urdhva Dhanurasana (Upward facing bow – sometimes incorrectly called full wheel) are meant to be the shape of an archer’s bow.