Wow, what a thread.
I think it's great to collaborate with people and if you were able to get a small team together then that would be awesome - I've been trying myself for a while, it's hard work to find people (especially coders). However I am with the opinion that 3 months is such a small space of time to study Construct or even game development in general. I've been learning this stuff for about 2 years now and I still have no fkin idea what I'm doing lol.
I would be careful about trying to enrol people into your project, because you may have no idea what stumbling blocks you will reach 6 months to a year down the line in development and I think it's best to be prepared for it. I've run into so many problems and I'm really thankful that the people I have worked with are as patient as they are lol. I'm also super thankful for the people in this forum, for they are awesome and very helpful - this thread for example has suggestions and advice to solve one of your big problems.
Of course it's impossible to have the foresight to predict these problems but I think what I'm getting at is that, if you've only used the app for 3 months, before trying to finish this game - I'd try just making a few very tiny games and experiments by yourself, with each little game taking advantage of one element of the game you want to make, perhaps. This way you'll really learn about the process involved with development and you will have gained a lot more experience and be better prepared to know what you need to do or learn in order to complete your main project and from that you'd be bang on to people saying, 'I need this and this, can you do this - I just need a bit of help with this...blahblahblah'
Am I being a twat? Am I not helping anything at all? Shall I shut up now? Yes