Hey man whenever you need any help with RMXP, I'm your guy. If I don't know how to do it (which is quite rare, if I do say so myself) then I know someone who does

Welcome to the forums!
It is perfectly acceptable to post games that only have the RTP in them, and even to sell them. The problem is making it actually look GOOD. Generally, the basics that come with game engines don't look as good as they could, they're more starters to get you learning the game engine.
About your video. I very much like the fact that the interior and exterior are connected. It's quite a unique way of making it, and it isn't something many people do. However, with houses, people generally tend to map more than needs to be there.
The second story effect was very unpredictable! The exterior seemed to move farther away. That is very unique indeed!
Then, the teleport through the door was very well done! You should experiment fading maps in and out by changing the screen colour tone, instead of just checking the "fade into map" option. It almost always looks nicer.
When you go through doors where doors can't be seen (the sides or downwards), make sure to mark them. For instance, use darker tiles. The semi-pro game designer Reives (he uses RMXP as well, makes the games To The Moon, The Mirror Lied, and Quintessence, if you've ever heard of those) actually uses arrows to show the player where to go the first time they enter. After that, they disappear, which you can easily do with switches.
Your mapping does need some help, but that's everyone's weak point when they start in RPG Maker. I used to be terrible. So you can check out
this awesome tutorial for great tips on how to map, and how to do it well. Make sure you read it all, because I even learned some stuff after reading it just a short time ago.
Also, you can use my
awesome guide to event commands for a little bit of additional help

Here are some additional links that could help you out a lot too:
Ninesages. If I don't make my graphics, this is where I get them the majority of the time. It's in French, but it is pretty easy to get around, especially if you translate it

it doesn't let you right click because it wants to know how many downloads it has received, so left clicks only.
Looseleaf. This is a character maker for RMXP. It really helps A LOT. Note that the characters that come out of this are slightly larger than the RTP characters, so it's best not to intermix them. They still look fine with RTP maps and everything else though. The site is in Japanese. Don't translate it, or it won't work. It is also very easy to navigate. You can't right click and save the pictures, so you have to Print Screen, paste into Paint (or similar program), and crop out your character. Tedious, I know, but definitely worth it.
If you ever need anything for XP, I'm your guy! Just let me know