Need help installing bird nesting boxes in my garden

Hi there, I’m looking for someone to install several bird nesting boxes in my small suburban garden. I’d like the boxes securely mounted on fence posts and on a sheltered wall, at heights suitable for different species. If you have experience with proper mounting heights, driftwood or natural-looking housings, and ensuring ventilation and drainage, please let me know. I’d also appreciate advice on placement away from predators and strong winds. I’m flexible on dates, but I’d prefer a weekend slot if possible.