The first thing is that you have to have love and desire for these. Because if you don't have love for them, you will want to end it anyway. It takes me a whole day to do 3D and rendering of this one model. Sometimes it takes longer than that. As long as I don't like a model, I keep working on it. I have been working on these for about 3 years. If you want to know more about these, you will see the designs of the models made by the designers on various web sites. And always try to be new