I prefer if you decide to work with me to write me a message before ordering so we can discuss the task and its difficulty and if I am able to do it.
You can look at my packages or write me what you need and I will send you an offer. I will provide you with whatever type of files you like in high resolution and as gig extras I offer source files, commercial license, modifications.
I would like to add that I am a student of Poster and Visual Communication so if you need a poster which you would like to be more than an advertisement but more of an art piece I will be glad to help you and work with you.
If you have questions you can always contact me.