i’ll be making large bat wings for a 6 year old boy this year for halloween. i can’t decide on how i want him to wear them. sewn on the costume or removeable. if i do removable, is a sort of harness to much to hold them up? or is there something simpler? i expect them to be at least 3 feet wide and ? feet long. is there much wind resistance with large wings? that would definatly affect the shape and size.