Hey Elrodeon! Welcome to the forums
It is great to hear that you love creating worlds and writing stories, that is the love for creation, which is what everyone of us are so deeply invested in! You did right by come by this forum, as there are indeed many skilled individuals here. I would love to leave feedback on your future stuff to help!
I understand that you don't have much time to post often, but I think it is sort of important to keep a blog alive. Right now, you might be connecting your love for creating stuff, directly to this source, and if it doesn't do well, it might affect your belief in, or love for creating. And this might easily discourage you! So just as a first feedback, I think posting weekly is a bit risky!
Now, there are ways of getting around this. I myself, am having an art related education, yet, because of the week-long creation process we have for each project, I usually don't have until the end of the week. This is why I am desperate to anything I can get my hands on, and post even silly sketches to keep the blog living and breathing. Luckily, I enjoy drawing on the side, so it isn't a hassle for me to make something while waiting for a bus or something. I assume this applies to most people in this forum, as we all enjoy sketching!
I won't have much time to browse the forums until Wednesday, so I just wanna leave an art hint that I found to be incredibly important; Master drawing before going into color. Now, by this, I don't mean quit coloring until you can draw. What I mean by this, is to try to learn things such as anatomy, proportions, values, line weight, foreshortening, perspective, etc before fully committing to spending a lot of time learning color. Art can easily be a journey of self discovery, where you draw for yourself and learn things on your own. But, this process can be enhanced by the immense amount of information floating around on the internets today, and I very much recommend you to look into that kind of exercise, before learning yourself to color. I remember being the best person at drawing that I had ever met, and I remember getting myself a tablet. I spent a very long time desperately trying to apply my drawing skills, and paint, yet everything I did seemed bad. A year must have gone by until I realized that, I was far from good, I was far from what was considered good enough to create even an unimpressive painting. I spent a lot of time considering why this was, and I always thought that I simply had to learn to "paint", and it was very discouraging. However, the moment I realized that I had to learn to draw properly, was when I instantly started improving. Hopefully this tip can help you, as I really wished I had that back then!