Well, thanks a lot for the suggestions, but I feel that I am in a dilemna; a contradictory situation.
Time is a big issue here. I really cannot explain to you why am I busy till the point that I can only afford practice for 2 hours each weekend day, and even then, I might not even be able to have enough time and energy to practice for that amount of time. Furthermore, I will only be able to pursue this hobby until the end of this year due to various reasons, after which, I might have to adbandon drawing completely, if not draw very infrequently.
I genuinely want to improve, but even if I did, I must be able to produce something by the end of this year.
So for now, I was thinking if I could develop a proper plan to be able to have a resonable level of skill in these things by the end of this year, using the 4 hours I have as effectively as possible.
1. Be able to draw anime portraits and shade them using pencils and color pencils
2. Do more spriting
3. Learn papercraft and scrapbooking techniques and use them to produce anime fanart
I say you should follow what you love doing. Even though I have no idea what reasons you have for abandoning your artistic hobby, I say you should do what you enjoy doing. Take time with your work, learn a skill and hone it more instead of rushing some papercraft, and then transition to spriting and change to shading and anime.
Every artist has their own style so try and figure out what style you have and what you like before learning a bunch of things continuously. You can worry about 'more spriting' later unless you are fond of that area. If you are interested in anime fanart, you should learn proportions and drawing bases of characters and their anatomy before learning how to shade them.