Need a seamstress/tailor

I am going to be the maid of honour for my sister’s wedding on 20th October. I have just tried on the dress she has sent and it is a bit too long and a bit big. I need a seamstress to take it up and in for me before I go back to England on 19th October. 

You don’t need to be English speaking, just so long as I can explain what needs altering! 

I live in Pozuelo but can come into central Madrid for a fitting. Thank you.