成语 or expression that one is speaking about a topic he knows nothing about I am giving a presentation about topics in philosophy for my Chinese class, and unlike many of the students there, I have no formal education in the topic I am presenting. I feel it would be appropriate to humbly qualify my presentation with a statement expressing that I am not an expert on this area, and that many in the audience have studied it to a much greater extent.

I am tempted to use the expression “班门弄斧”， but it does not seem all that correct, as no one in the audience is truly a master of the topic, but rather just better than me. 

Is there an expression that I could use which would be appropriate?
Being modest is a good thing, but when you give a presentation, you should assure your audience that the content of your speech might not be ground-breaking, but is at least well thought out
Here is my suggestion:

大家好 - Hello everyone
以下是我努力硏修後得出來的成果 -  The following are the results of my hard work.
stating you have done your best and it is a well thought out speech

if you are not going to take any question:

如有不足之處，請各位多多包函 - If there are any deficiencies, please bear with me.

if you are going to take questions:

如有錯漏之處，請各位多多指教 - If there are any mistakes or omissions, please freely give me your advice.