Proof read and improve three texts of same subject (under 2000 words)

Your job is to improve three texts that all relate to the same subject of asking the reader to participate in crowd funding project in order to release a commercial computer software as free, open source software. The texts are the following: 1) Graphical banner for web use that summarizes the case with a call of action to read more. 2) Article that tells the user about what the project is about and with a call of action to participate (give money) 3) Press release about the project. All these three texts come up to a total of under 2000 words. The texts are fully done but they have been written by a person whose first language is not English and who is not a copy writer. Therefore, I would need a professional copy writer with experience about tech / software field and whose first language is English, to read the texts through and give his or her's improvement ideas. Note: Due to legal reason, the texts cannot use word "donate", we cannot ask the user to "donate" anything, instead we must use words like "participate". The texts are confidential, therefore I will give the texts only to the person who gets this project.