First of all, congratulations on having been so consistent for three months and having started to learn.
Your shading is pretty good and your way of expressing emotions with the head is laudable.
What are you trying to improve? Proportions? Stiffness? Expression? Try to work on a particular area and compare your progress throughout the weeks.
Here are some resources to help you, good luck on your art journey:
https://www.proko.com/ (Gesture drawings tutorials)
https://drawabox.com/ (An essential for learning perspective, 3d space and forms)
https://www.neogaf.com/threads/art-self-study-ot-putting-the-fun-in-art-fundamentals.1010752/ (Big post with lots of resources on anatomy and other things)
https://cravepainting.com/blog/youtube-drawing-videos-for-beginners (Nice list of videos to watch)
https://www.thrillist.com/news/nation/free-online-drawing-classes-how-to-draw (Free online classes)
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&list=PLvPwLecDlWRCxaqYm8Fl1u6zIr9v_Ny-P (Good playlist on how to improve your art)
https://www.goodreads.com/book/show/1514213.The_Practice_and_Science_of_Drawing?from_search=true&from_srp=true&qid=dkeWKwZwV1&rank=1
(Old book, timeless advice. Especially if you wish to imitate another artist)
Best wishes.