Your sum­ma­ry of the book was ... (clear, easy to fol­low, con­fu­sing, ...)

It would be great to hear more about ...

In my opi­ni­on ...

I think ...

Next time you could try to ...

I en­joy­ed lis­te­ning to your pre­sen­ta­ti­on on this book be­cau­se ...

I liked (didn't like) the story be­cau­se of ...

Your choice of words was good (bad). I un­der­stood (didn't un­der­stand) ever­y­thing you said.

The speed of the pre­sen­ta­ti­on was ...

Your sen­ten­ces were short and easy to fol­low (long and dif­fi­cult to fol­low).

I could hear a few (a lot of) mista­kes.

I like that you loo­ked at us while you were spe­a­king.

You loo­ked very con­fi­dent.

You were a litt­le shy.

I could see that you were ner­vous.

In my opi­ni­on your use of co­lour was ...

The text size on the pos­ter/pre­sen­ta­ti­on was ...

Your pre­sen­ta­ti­on was (not) well or­ga­nis­ed.

Next time you could try to ...

(Not) All the in­for­ma­ti­on on your pre­sen­ta­ti­on/pos­ter are re­le­vant. For ex­amp­le...

I think you pos­ter/ pre­sen­ta­ti­on was ...

I liked that ...

I didn't like that ...

Your pos­ter/pre­sen­ta­ti­on had a good over­all im­pact.