Please don't feel that the mid-air is in any way your fault due to a lack of skill....we were all beginners once..
There are un written rules in RC aviation.....a student under instruction with an instructor can't cause a crash....usually
The more experienced pilot should yield to the student.....

I am not trying to assign blame...I just don't want you to feel this is all you...it isn't...like I said...if you tried to hit each other you probably couldn't