"Das ist mein Eindruck."

Traduction : C'est mon impression.

[deactivated user]

I don't get why "impression" here is masculine when in the other sentence is feminine "ma première impression est bonne".

[Geomethrie]

The word "impression" begins with a voyal. So you have to use "mon". I think the reason for that is the sound.
une araignée, mon araignée;
une chienne, ma chienne

[deactivated user]

Oh gosh, you are absolutely right! i have forgotten it DX.
Thank for the reply though :).

[Tom890455]

Geomethrie! Your explanation is pertinent to the French word (cf vowel you mean?)(cf euphonie). In the previous German sentence, (=Meine erste Eindruck ist gut), why?