Derby boss Billy Davies remained positive, despite their 5-0 thrashing at Arsenal.
Davies declared: "Ultimately the early goal cost us dearly, it was poor defending even if it was a top-class finish.
"They have quality running through the side - they are a top side. They play with a huge amount of confidence.
"The learning curve and experience is crucial. It looked as though we were moving the ball around with a bit more confidence at time. But we still stood off when we should have been in people's faces.
"Sevilla came here - a top European side and lost 3-0 - so there is no embarrassment to come here and get a lesson off them.
"We are not despondent at all, we feel we are getting better and we will continue to work very hard."