1) Install the Trial Maker to a folder of your choice. It's probably best to do this to a folder without Japanese characters. You can rename the folder after installation - it won't mess up the install in any way.
2) Rename your Maker's data folder (NOT abdata!) to SexyBPR_data.
3) Rename your Maker's EXE to SexyBPR.exe.
4) Extract all contents of this zip to the root install folder. This will create a folder named Plugins in your maker's root directory, and install several DLLs into SexyBPR_data/Managed. Two files will get overwritten - System.Xml.Linq.dll, and UnityEngineUI.dll. Backups for both are provided (with .Original appended to the end).
5) Run SexyBPR_Patched.exe ONCE.
6) From now on, the Maker should have Plugins enabled - and, as a result, be fully Translated into English! You no longer need to run SexyBPR_Patched.exe to get the translations. As a bonus, other plugins should also now work with the Maker, but their compatibility isn't fully guaranteed, nor covered by this. Seek out the authors of those plugins for support on them.