Fine art academy is a great art channel. You messed up the proportions a lot though, I recommend studying up on anatomy and doing a lot of studies and groundwork BEFORE you get into following real time videos that have shading and all that... That's the only way you can improve. I mean shading is cool and all but when there isn't any structure behind it, it just looks really amateurish and stands the risk of distracting you into believing you made a good drawing!

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"Avoid any and all unnecessary shading that takes away from the effect of each plane being on one of 4 main sides. It's not shading that makes a drawing" -George Bridgman