For a couple of months I was sitting staring at a wall trying to project my Tulpa in front of me for about an hour a day, but got no progress. Now I just try to hold conversations, but I get no voices whatsoever. It's still just me talking to myself.
by "project", do you mean trying to physically see it irl? because that's something you save for last
there are several methods, though.
there's the slightly quicker one, where you do personality
there's the slower one, where you just talk and talk until something happens
you won't get voices quickly - it takes quite a long time, so you need a long attention span and patience
visualization is important if you want your tulpa to have a specified form, though
however visualization is not the same as trying to actually see it, it's just imagining it, and trying to get as clear an image as possible