Yes I think it’s good to do these quick one day projects, however it only can get you so far, and it’s not going to teach you how to add details and push your models further.
So at some point try to go the extra miles and go further into details, not just the main shapes.
Try also to make a complete image, not just a model over a black background. At least put a ground, a sky, or a studio setup, so you present the model in context !
Yes, first don’t hesitate to post your work here and ask for review. You can also post in the focused critique section especially if you’re willing to keep working on the model, you can get feedback and it’s a good exercise on the overall.
From there if you work a lot, yes it’s possible to make an industry ready portfolio and apply to big studios, however there is a lot of things to understand to make that work.
First there is a lot of people and students on the market, likely more that the industry can offer. It’s a cool job, people can learn on their own with blender, we all grew up with movies and videogames, therefore many people want to work in that field. So you have to become really good, and consider if it’s worth the trouble… Maybe think of a plan B, or make sure you really know where you’re going into.
If you think this is your passion and you don’t see yourself doing something else, it might be worth taking your chance. If you prefer stability and comfort, maybe think it twice … Anyway it’s something you can think of later and for now you can just enjoy your passion.
Another thing to consider : weta or blizzard, it’s two very different studio . One is about hyper realistic creatures for VFX, the other is about stylized video games. So it asks for different skillset. Your portfolio, and your studies, should target one or the other. Obviously you can have a portfolio that works for both, but this asks for more work as you must be comfortable with both style/workflow, and be better than all artists that have specialized in one.
And it’s not only about style and modeling for VFX or video games, but at weta you’ll probably work with Maya, Mari, Houdini and Blizzard is likely to use more Substance, Unreal… so consider learning their tools as well !
And these studios being the best in their field, they have a lot of artists to choose from … Again it’s not impossible but maybe consider getting your feet wet with smaller studios to begin your career, and focus on one main industry, like video games, VFX, animation…
There is a lot more stuff that I would like to say, but too much information can start to be pointless, and you have time anyway… What you can do is to pick a movie or video game that you like to work on, and look at the credits. Take something like ~ 20/50 names and look for them in artstation. Try to find junior artists profile as you’ll see more their personal work. Since studio work can be misleading as it’s hard to tell exactly who did what.
Seeing those portfolios while it will probably raise the bar high and comparing to other is tough, but it can give you some goal to reach and a proper example of what you need to work on.
I suggest also to look for other departments, modeling is an entry skill. Every 3D artist know how to model, but few of them are really good. But there are more niche department that are more technical which could be easier to reach. For instance I started my career as a rigger. After that I did a lot of programming, and eventually I managed to get more into artistic position which was what I wanted to do in the first place even if I like tech stuff as well.
Currently my specialty is being able to have an artistic eye and a technical mind and be able to work with both. Therefore it’s easier for me to find some work. Obviously there isn’t a lot of work for a seasoned technical artist working with blender like myself, but I get to work on projects I really enjoy and that’s enough to get a living out of it…
On the flipside it took me something like 6 years of studying by myself to enter the industry, and my first 5 years there was quite intensive before I get into animation and rigging. That was a long time ago so nowadays it’s different but it’s not necessarily easier either …
Ok, I hope this gives you food for thoughts and don’t hesitate to ask if you have further questions !