Go to an architectural college and learn construction. There are many disciplines within construction. Choose one that interests you.
Such shelters as you suggest are called houses.
a wigwam
Toucans do not build their own shelter. They nest in abandoned tree holes that other birds and animals leave behind.
a wigwam
Some animals that build intricate structures for shelter or protection include beavers, termites, birds like weaver birds and bowerbirds, and some species of spiders.
Being able to make a shelter... provides a safe place away from the weather, or possible predatory animals. The ability to make clothes - ensures you are able to keep warm in ccolder weather.
A shelter houses a variety of needy animals who are looking for some help from concerned humans . People how are kind and understand that animal have feelings too just like humans will help them and we all should do it .
It took 4 days to build it
So they can: -Build a shelter OR -Use the leaves to protect/carry their food.
build homes for them,give them shelter and food, and take better care of them
they build shelters to protect themselves from outside conditions. Like the weather.
They don't build shelters. If they need to shelter from the weather, or need somewhere to rest - they simply seek out a suitably sized hole in the ground.
About $1,200