I looked at some of your drawings. I would say you lack some of the fundamental drawing knowledge/skills. I looked at your Instagram and there were a lot of Pokemon drawings, they had a lot of proportional mistakes and you seem to also lack perspective skills . I would highly suggest you work on those first. The use of the box is to break things down into their basic structure. the image below is by one of the instructors marshal vandruff, and he is breaking down the concept of dinosaur into many different forms to simplify the drawing. I would suggest you study from these resources : For basic proportion: Drawing on the right side of the Brain by Betty Edwards &/or Keys to Drawing by Bert Dodson For perspective - Scott Robertson has a really good book called how to draw (this is what I studied from ) there are courses by marshal vandruff and I think there is also a book by peter han.