wrobel said:
I have a little bit odd request to participants of PF. Would you please write here your impression about my English. And please be completely honest. I am not a touchy person. And it is very important for me.
Thanks in advance.
Prepositions can be problematic.
The first sentence should be ( in the manner of which you have written ), "I have a little bit odd request OF participants of PF."
Although you are making the request TO the participants of PF, the sentence reflects the future action of participants who are being asked to give something back to you, hence the OF.
( One could also use FROM in certain situations depending upon the sentence structure, but in this case, I do not think so, due to the way the sentence is written. )
Eliminating extraneous words:
"I have a request of participants."
You can compare the sentence to:
"I have a request of you."
If you wish to keep the little, bit, and odd:
"To the participants of PF, I have a little bit of an odd request of you."
sounds somewhat better than,
"I have a little bit of an odd request of participants of PF."
where the "of's" seem to run into one another.
Never the less, your English is quite well composed and understandable.
You can take heart in that,
"English is a little bit of an odd language."