Thank you so much for the support Teesea. Your hints helped to solve the Star one. Unfortunately I am still having problems with Pattern1 as I pointed in the comments there.
Thanks again Strigoii. Finally solved the Nigtmare with your help to show my mistake. And thanks so much Not_a_conspiracy for your contribution on the Dissertation. Now just four to go!!! Impossible without so great people help! Thanks for all of you.
Hooray! Glad there's a few less puzzles that will be sitting in the unsolved pile.
Unfortunately, I still haven't been able to solve any of those puzzles. I've tried several times and keep coming back to them every few months. The lighthouse puzzle seems like it should be so straight forward. T.T.
Thank you - good image - feel better now about my inability to solve some puzzles given all the comments above - my brain cells are not as feeble as I imagined :):):)