2. Get weaving! Gather some thin brushwood, or long creepers, ivy, remembering only to thin what you find, rather than stripping everything, unless of course adults say it’s helping them to clear unwanted plants away. I used a combination of long, thin birch twigs (found on the ground) and very long trailing creepers that were growing in a deserted bit of land. Holding one end of a small, long bunch with one hand, use the other hand to wind it in and out of the upright sticks. Leave one gap for a doorway. Keep going with more lengths until it gets to the height you want for the nest. At the door end if you have extra length you can bend it back and weave it in the other direction.
Don’t worry if twigs snap, either replace them or just carry on, gently adding to the weave. It is ok if the work is quite rough – it will still keep the worst of the wind out!