Instructions for online survey

[philena.livejournal.com]

You may remember that a few months ago I posted some sample sentence-completion tasks and asked for help writing the instructions for them. You were extremely helpful in correcting my lousy Russian attempts, and I'd like to beg your help again. The instructions have gotten a bit more elaborate (Institutional Review Board informed consent requirements), so I've expanded my instructions, and undoubtedly created many more errors in the process. Could you please give me your feedback on the following prose?

Please do not feel obligated restrict your corrections to obvious errors. If it sounds too informal or is just plain awkward, I'd love to know how to improve it. This is not a grammar exercise, but an actual set of instructions for a linguistic experiment, so I'd like it to sound natural.

Thank you very much!

( The Russian . . . )

( The English . . . )