Okay, let’s tackle this. So Ivana has 6+ years of experience as a Lighting Designer, which is a specialized field. Her education in architecture adds a layer of versatility. Location is Serbia, which might affect the rate due to regional demand. However, considering her experience and degree, I'd estimate her hourly rate to be on the lower side of the industry average. According to national averages, junior Lighting Designers in Serbia might charge around 20-40 EUR per hour. Given Ivana's experience, I'd round up to 45 EUR per hour, which is still relatively lower than what I'd expect in Western Europe or the US.