You can use phrases like 'years later' or 'after a long time' to indicate a time skip. Also, describe changes in the characters or setting to make the passage of time clear.
Well, it's hard to say exactly without seeing it. But if it's from the same creators, there's a good chance it'll have that unique charm and humor we expect.
You might come across fanfic that explores Don's backstory, revealing hidden aspects of his character. Or, there could be alternate universe tales where Don has different powers or a completely different life.
You can do it by clearly marking the time jump and explaining the changes that happened during that period. Make it smooth and not too jarring for the readers.
Well, to write time skips well, you need to make sure there's a reason for it. It could be to show character growth or a major event. Also, give enough details to bridge the gap and make the transition smooth for the readers.
The key to doing time skips in a story is to keep it logical and relevant. It should enhance the plot, not disrupt it. You can use dialogue or internal monologue to explain the passage of time and its impact on the characters.