Well, I know people on here will give you any advice you may be needing, but I don't know of anyone who would do the work for you! You can always look around for someone to comission, as I do know cosplayers who will make a costume for money, but it will definitely be expensive, and some of the joy of cosplaying is lost, I've found.
We all learned through trial and tribulation, every one of us!
If you think of a costume you would like to make, just ask people on here to give you advice and ideas on how to do some things, and I'm sure you'll get a lot of response! The needle and thread part, though, are up to you o.-
And if you don't know how to sew, your local fabric store will probably offer lessons. Take advantage of them! I only learned how to sew less than a year ago, and since then I have gone so far... Hand sewing a vinyl dress, after only 3 months of knowing how to sew? If I can do it, anyone can!
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Second to Nun: A Chrono Crusade fansite