Hi Matt,
I watched a couple of the videos on your channel and I want to give you my honest thoughts. From what I have seen you definitely have talents, here is what I liked: Your character, you seem to have a friendly honest compassionate character; I like your artwork a lot and I like listening to your voice. I definitely think that you have the talent to make a youtube channel with broad appeal.
However I think you would have to change quite a lot. If I were you I would try to make content that is more suited to your talents. Honestly I don't think 'let's plays' are for you. First of all, let's plays are a very difficult content type to start a channel with. There is a lot of competition in that segment, you need to bring a lot to the table and you need to get lucky. An essential part of a good let's play video is the character of the player. With let's plays, the character is were the entertainment value comes from. To do those well you need a very engaging character, usually that means very outgoing, funny, expressive, ad rem and assertive. From what I have seen of you you have other qualities. I'd say your character and voice might be more suited to 'how to', tutorial style videos. I think you would also do well as a vlogger, as you seem to have some depth of character. I also think that your artwork is quite amazing and may be your true passion.
I hope some of these comments were helpful, good luck with your channel!