Well, this is a question...

So, I've been seriously considering making a Tulpa to keep me company, be a long time companion and be like a pet in my daily life. (yes I know what kind of commitment I'm making, and I am nearly 100% sure of it.) Now the problem is, I have no clue how this will affect shifting. Could it impede or damage my ability to shift, and could it hurt my mind/ make me go crazy or hallucinate if i tried to P-shift while with a Tulpa? I know not many of you may have answers, as i dont think anyone has done this before, but it's good to start somewhere

Well, considering that making a tulpa requires either decades of training in mental control, or a massive amount of mystic energy, I'm pretty sure that your question is a moot point.