Hello! First off, I'd like to say that your YT channel link is broken. You should fix it
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Secondly, I recommend not having an intro, because people have a low attention span and will click off videos if they aren't interested quickly enough. (Just what I think, though.) I do, however, recommend an outro. You can easily make one for free. Now, I know this might be long, but this is what I do:
I use panzoid.com and make a nice template, that says something like "Subscribe", "Thanks for watching", etc; You can design whatever you want! (Put it as YouTube video frame 1080p)
Then, I download the image and put it on a Microsoft Presentation, saving it as a Windows Media Audio/Video File.
I then put that in Windows Movie Maker, record a narration, save that, reopen it in as a new Windows Movie Project, and record a narration.
Then, I use Microsoft Expression Encoder to overlay my previous video on the outro, making sure the volume for the overlay is appropriate to everything else.
I save the video, then I add it on to my actual video (which is saved elsewhere in Windows Movie Maker)
Hope this helped
Also, you can design a banner using panzoid.com, maybe make some custom images with GIMP or take some CC images from Google.