Strange title right? Basically, there is another game engine that has tools that Im more familiar with in terms of creating assets. Would it be against the rules to make my assets in another game engine, then import them into Gdevelop?  Of course, all of the code and actual functionality would be made in Gdevelop, meaning this should still fit within the rules of using Gdevelop for the game. The other engine is merely a creative tool, like photoshop, gimp, or piskel technically, but I just want confirmation so I dont get myself disqualified over a technicality.

That would be fine. 👍

As long as the game itself is made in GDevelop, where you get your assets is not an issue.(As long as you have the legal right to use them of course)