Your channel overall looks pretty sturdy, although I don't speak Spanish, you sound as if you'd be entertaining to listen to and it's good quality, you don't appear to be boring or what not either so that's a good thing. Another thing is your thumbnails, the desperado ones look good, but I'd suggest using different pictures every episode and a more pop-out font instead of the basic one. For the Minecraft survival/hunger games one I'd suggest making your own type of logo and again, use different background images. I would show you an example, but I actually deleted all the Minecraft stuff I had, I'll make a couple basic ones though so you know what I mean:

I'll use The Hunger Games for the example. So what I did here was take a picture of the official mockingjay and used that in the background as it does in fact represent THG, then I made two different types of text which suit what we're playing, the Minecraft is in it's original Minecraftia font and "Hunger Games" is in a scratchy/grungy font which in my opinion suits the feel of the game and movie since it's pretty violent . I also added a blurred image in the background, if you were doing this I'd suggest using an image of the arena you're playing in, in that episode. I used a random picture of terrain for the example though.



For episode two of the same series, I'd use the similar looks like so, with only changing the episode number and the background image:



Now, if I was to do a different series, but still with Minecraft, I'd keep the Minecraft text, but swap out the other text and the image in the background that represents what you're playing, here's an example of what I'd do for Hide & Seek, another Minecraft minigame:






Everything I done above is just personal preference of course and you don't need to use it, I believe it's a good example though of what you can do with your thumbnails.

Pretty nice channel, a better mike is pretty much all you would need I would say.