@Jehoshaphat Christian Ray your editing work is really entertaining to watch! First off I would recommend getting Audacity and using the noise reduction to edit out the hum from your mic track just to make it a little cleaner sounding. Make sure your mic isnt too close to your mouth, otherwise youll get extra noise on all of the plosives (like p's and b's)

try to make your avatar and banner compliment each other. If your channel art is alll jumbled up with a bunch of other channel's art someone should be able to pick your avatar and banner out and say these two belong to the same channel. other than that looks like you're off to a good start with your thumbnails! try to make the elements your add on them a little bigger so they are easier to see even when they are small. Great job and keep up the good work!