1. I remember that trip with pleasure. OR I recall that that trip was pleasurable. 2. The streets were beautifully decorated in preparation for Christmas. 3. I took this photograph two weeks ago.

1)I recall/remember that trip with pleasure.>ok I can recall that trip...> you can bring it back to your memory. I can remember that trip.. >to still have in your memory about that trip 2)The streets were beautifully decorated to mark Christmas.>ok 3)I made this image (Can I say that instead of "took this photo"?) two weeks ago. Both seems ok , but depending on whether you made it or use a camera .

That's an interesting way of a mutually beneficial exchange between learners and native speakers.Thank you.

Your sentences are correct. Actually they all sound like they are in a higher register of english than you would hear in everyday communicatiion in the USA, where I am from, but there is nothing wrong with that. We can always use some new help to raise our average level of use of english here. ;)