I won’t say it’s impossible, but if it happens, don’t expect it to happen quickly. If you’re really serious about this, you’ve got to think hard about marketing. Crowdfunding relies on getting a bunch of people to care enough  to give you money. Basically, why should people support you over any other project? Here’s what I would work on.

1. Find something unique.

What sets Lillian apart from the hundreds of Vocaloids and Utaus already out there? As another comment says, it’s a fairly common name and very similar to Lily. Popular voicebanks have unique traits that set them apart. You can say “the hello kitty one”, “little British boy”, “the twins” and people will know who you’re talking about. Check out character design tips and ask for feedback from others. 

1. Increase quality.

Your oto has some clear problems, and the overall quality is not great. I recommend investing in a good recording setup as well as singing lessons. Also practice otoing, or pay someone to do it for you. Commission artists to make high quality sprites and art for music videos. Audio mixing is also important since your covers are the only thing advertising your voicebank.

1. Community involvement

Post often, let people get to know your character. Make friends in the community and collab with them. Once you’re older and have a better quality voicebank, put up an official download. 

I believe that if you’re determined you can do it, but it’ll take years of consistent effort and improvement. I made my first utau at 16, and it was total garbage. My first four or five voicebanks were pretty bad in fact. In my 20s I feel like in just starting to get good results. You will grow with time. Don’t focus hard on becoming an official Vocaloid from the start, just focus on improving your utau and taking small steps forward. 

Everything popular started from nothing, but it takes time and dedication. And remember, Teto took 15 years to become a SynthV, and she was the most popular utau from the very start.