Nothing wrong with "lawn"  . . you are all too young, have you not made your own dresses once upon a time ?!
Could not parse several others, though . . .
e.g.
39d Tax measure brought back, cutting a little money (9)
Why would that be Challenge ? 
and what is 
41a Officer no longer receiving a raise (5)
E - A - T
? 
Thanks in advance !