You might be able to find a plugin that can extend the touch trigger of an event by a tile or so, or making it so that you trigger a scene before you become adjacent to it. You will require a plugin that allows you to shift or split the hitboxes, and this can lead into it difficulties and smashing your head onto the limitations that a beginner should not be worrying about. The hitbox for the character sprites is, by default, set around the center of the character’s feet, even if they are a bigger size, for consistency’s sake. If you are making it non-chibi, make sure there is a $ at the start (you can use both the ! and $ together, if need be), so that they aren’t shifted up 6 pixels off the ground. If you are only implementing 1 character sprite sheet, make sure there is a ! at the start of the filename. Follow the structure of the Character Generator sprites for an easy example. 48x48 px, 72x72 px), it will implement them easily. 1st row is down movement, 2nd row is left, 3rd row is right, and 4th row is facing up. The way you can use those is up to you, but if you look at the default sprites this shows an example of how the program reads them.
As long as it fits the standards of a 3-frame walk going down/left/right/up and have equal dimensions (i.e. Rpgmaker’s sprites are supposed to have 12 equal cells split into 4 rows and 3 columns. For importing bigger sprites, its as simple as dropping it into the Resource Manager.