Want to know you guys' opinions

What dou you think of Japanese garden?

Japanese garden is Japanese traditional garden which ranges a lake or a small artificial mountain and plants kinds of trees or plants, enjoying four seasons of Japan. Recently Japan is saling the art and the beauty of Japan like this to other countries as "Cool Japan".

Do you think Japanese garden is attractive for you or want it at your houses if you have enough money? I want to know everyone's opinions.

Translation I can't understand this sentence below (especially the part of "going so far as to.draw). he has also contributed to Marvel projects, even going so far as to draw an official poster for Spider-Man: Homecoming to commemorate its Japanese boxset release. When I translated them into Japanene by using Google translation, it was: また、Marvelのプロジェクトにも貢献しています。Spider-Manのための公式ポスターを描くことさえ可能です：日本のボックスセットリリースを記念したホームカミング。 Does the words"going so far as to verb" mean possibility?

Because, since, as Which is more casual or more formal in these words: because, since and as? And when do you use these words respectively?

How different? How different are these words below? I don't know I don't tell I don't get it

a contribute after a long I logged in italki afte a long time. Today I think I want to write what I have been thinking these days. I was supposed to go to Belgium for exchange in September, but I didn't go as an urgent problem occured with my family. the decision that I didn't go was right, but sometimes I regret not going. By the way, I'm worried abour forgetting English now because I have few opportunities to use English. I don't forget it and in order to keep remembering I have been reading web news in English and I'm going to use italki notebook from this time:D. So somebody, pleese correct my sentence if you are free.