One major difference is the art style. Cartoon Network anime may have a more distinctive and recognizable look, while traditional anime varies greatly in its artistic approaches. Also, the depth of character development can differ, with traditional anime sometimes delving deeper into complex emotions and motivations.
Well, one way is to use special software and tools for digital drawing. Learn about anatomy and proportions in the anime style. Also, look for tutorials online to help you along the way.
Not much direct connection. Megaman X is a video game series and anime cartoon network mainly shows various animated shows, but there might be occasional mentions or related content.
Often, having characters turn into giants in anime cartoons is a way to show their hidden powers or transformation for a greater purpose. It might be related to saving the world or facing a major threat.