Editor/proofreader needed for a feature length screenplay.

I am currently seeking someone who is experienced at editing and proofreading screenplays. English is not my native language, but I've managed to write a screenplay in such language. It needs some fine tuning with the grammar, dialogue, punctuation, structure and sentence structure. That is where you can "potentially" come in. The screenplay is 110 pages long, 19,007 words in total (subject to change). It's accompanied with a one sentence summary(log-line) and a one page summary (synopsis). The winning bidder must edit and proofread all three documents. I am looking for a good turn-back time, but I would prefer a high-quality and professional job, foremost. The core story doesn't need to be changed, but suggestions on how to improve the action lines and dialogue are needed. Any inconsistencies will also need to be alerted. Your biggest focus will be on anything related to spelling, punctuation and grammar. Communication is vital in this task. Simple emails will not cut it, but they are welcome alongside voice calls and text messages. It is highly recommended for you to show me some examples of your texts or publications prior to my selection. Things I will look for before making my final decision: -Reputable, honest, respectful and trustworthy person. -English as the native language. -Familiarity with screenplay structure and format. -Knowledge of present tense writing. -Education on the field of creative writing or anything similar. -Communication availability: Skype, phone number, email, and text messages. -Willing to edit and proofread the whole screenplay in addition, the log-line and synopsis. -Ability to correct and aid in the screenplay's dialogue and action lines. -Turn back time. -Total cost. Best of luck.