Les inconnus dans la maison

Any french speakers? i need some . how would i say 'my oldest brother is very tall, interesting, and good at drawinng.' in french? would it be: mon (i don't know the french word for oldest) frère est très grand, intéressant, et bon à dessin. also, how would i say 'my dad is good at his work' in french?

What is the fastest way to travel across france? bus plane automobile tgv

Answer these questions in french: de quelles couleurs est le drapeau? qu'est-ce que ces couleurs signifient ? !