Personally, I would not use a freight forwarder. I would use a removal/relocation company.

Two more points to note.

One, they will expect you to haggle, also shop around, to get a feel for prices, and make note of the materials used as it affects price.
Two, buy your self a cheap set of step ladders, you can get them at any big supermarket and sometimes there is a neighborhood hardware store that has them. The reason is that most trades people, even those who need ladders, don't bring them. They are always useful as most places here have 3m ceilings.

They usually do, and they will also deliver and hang them for you.

As Lemon lover says, there are lots of companies doing this, mostly small family businesses, but some are larger. You should have no problems finding people local to where you are going to live. The larger businesses have many sample sets already made and hung in the showrooms, which is better than trying to choose from a sample/pattern book.
Usually when they quote, this is for the made item. This usually comes with tiebacks. Some curtains are 3 layers, including nets, which often come as part of the set. These places also fit curtain rails, which start at a very low price.
Be aware that all the curtain places we visited only do full drop curtains as that is the width of material they use, such is the market. We got some shorter curtains made, but had to pay for the full drop. We could not get two drops as even the short windows here are 1.5m.

Mae culpa. I glibly (not pompously) used the term IP, without foreseeing overreaction from some quarters. How about if I had said, 'the results of my efforts in my own time, for which I wasn't paid'?