NunuXD
I don't remember the show that well, but you could incorporate the plots of some of the episodes from iCarly into your fanfic. Also, you could make Oli create an event like Twitch Con later on in the story. Also, you can have him "run into" some characters from other shows like Victorious, Sam & Cat, Drake and Josh, Hannah Montana, that's so Raven.
I suggest you expand the universe of the novel without crowding several characters in the same chapter, develop more MC Goldfinger, don't rush the ramance or force the creation of the harem (if any) too fast. In case you get stuck, use icarly episodes or other series as a base, you can also develop POVs of other characters. you are doing a good job, thanks for the chapter
here's an idea, look at episodes you really liked from other shows then play with those scenario's the cast were in and build up your own chapters. to start you off pick a random season 4 episode of how I met your mother and looking at the dynamics of the main group try to apply them to your main group. you don't have to make your novel a 1:1 copy of icarly or even slightly altered of another. try and see how your characters could react to different situations and build from there. even something as simple as Sam and Freddie fighting while Carly shifts off one of Spencer's statues could turn from them try to get it back from a seemingly well prepared delivered agent to long trip from place to place trying to track it down. with your universe being a crossover then old timeline shouldnt be a religious template but instead skeleton you flesh with your own story
Hello Nunu-sama, my recommendation would be to continue with the chapter on integration of ICarly, then a chapter with Spencer and her sculptures or simply move on to her integration into the School. You can also insert new characters, such as Givi and others that appear in the Series. But I would 100% recommend going deeper into the world of Nikelodeon. I don't know very well how the chronology of the series is currently located, but this is a point to keep in mind. I would also like to add that you could insert new scopes of work for the MC, since as he said "just being a cook is not going to evoke strong emotions".