Questions about example sentences with, and the definition and usage of "Editing"

A: Editing is when you are working on something. You are working on or creating or fixing something in fashion design

A: I assume editing means video editing.

101
"showing the most basic knowledge about a subject: "
https://dictionary.cambridge.org/us/dictionary/english/101

"Denoting an introductory course at college or university in the subject specified."
"Denoting the elementary or basic facts associated with the field or subject specified."
https://www.lexico.com/en/definition/101

A: 1. Your first sentence gives emphasis on the set of choices provided for being the best editing program.
2. Your second sentence gives emphasis on the word "best" which gives off a feeling that what you really need is the best editing program.
3. The same as number one.

A: @Hawwa_A thnx

A: Present vs Past

"I had" means you previously did.

and

"I have" implies you are still currently doing, or have recently been doing something before the conversation.

A: bad grammar (but not uncommon): I got done editing.
Better choices include:
- I finished editing.
- I finished up editing. (colloquial, but okay)
- I am done editing.

A: 合っています。
直接翻訳したらPlease grant me permission to edit the fileも言えます！

A: To select/pick out only the necessary parts

A: × After I finished editing, I will contact Tanaka for proofreading request.
✓ After I finish editing, I will contact Tanaka to proofread my work.

A: × After I finished editing, I will contact Tanaka for proofreading request.
✓ After I finished editing, I contacted Tanaka for proofreading request.

Above is "Simple past"

Or

After finishing editing, I will contact Tanaka for proofreading request.

A: New Year is one of the most popular holidays/celebrations ( *you can use either one of them*) in Russia. It's interesting that it's much more popular than Christmas but today, I'm not going to talk about them. I won't talk about Easter and birthdays either. Let's talk about Victory Day.
( *Using two prepositions doesn't sound right in this sentence so you can write it as the following*)
We celebrate Victory Day on the 9th of May as the end of The Great Patriotic War, the most important part for us in the Second World War.
The ritual of the celebration includes military parades, fireworks, watching films about the war and, meeting veterans.
Some people think that we shouldn't celebrate Victory Day because the war was horrible and took away the lives of millions of people. According to them, we should feel sad on this day and remind ourselves that wars are cruel and we don't want it to happen again. I agree with one thing - wars are brutal, cruel and scary but, in my opinion, we can still celebrate Victory Day for the reason that if we had lost the war, the number of victims (* you can also use 'the mortality rate' *) would've been much higher. We, the descendants of the survivors, just wouldn't have been born! Therefore, I grieve on 22nd of June, the day the Soviet Union was attacked by Hitlerite Germany. Of course, I know about the horrible things which happened before that, but I write (* I'm not sure what you mean by this sentence* ) about Russia as the successor of the Soviet Union and things which happened to my Belarusian ancestors.
Its important to remember and write about these things. It can help us value life and live in peace and harmony.

A:
I have been living in Moscow for the past few years and now I live in Chekhov. It's a town located about [50km] away from [the] Moscow Automobile Ring Road.
It's quite [a] small place and I assume there are some attractions but usually I stay home or spend my free time walking in Moscow. So I can only [speak] about Melikhovo — [a] writer's [house] museum, which is not far from Chekhov. It's [definitely] not [too] hard to guess who was the owner of [the] estate considering the name of my town.

[If we] look at the Internet page of Melikhovo Museum (http...*), we can see that, currently, the museum includes the manor house, the guest house, the kitchen, the bath house, an exhibition showing an old ambulatory medical station, [the] large garden and some [other] things, [the names of] which I don't remember.

I liked seeing [the] rooms in all [the] buildings that Melikhovo has. I [felt] kind of like [I was] a spy, despite [knowing] that not all [the] household items were authentic.

[It] seems unbelievable [to] me that Anton Chekhov was not only a great writer, but a doctor.

I highly recommend visiting Melikhovo. Last summer my friend Kseniya [and I] [went] to Melikhovo (it was my third time). She was satisfied with [the] trip too.

Apples [from] [that] [place] [smell] so good. So why [would] I move to another town, far away from Melikhovo?

A: "I tried editing this picture to make it look like it was taken at a 90 degree angle." Like the other commenter, it's difficult to know what you mean by the "degree" part so this is my guess. I'm sure you're not talking about temperature, but what exactly you want to say about "90 degrees" is not clear.