actually you have a basic question about mapping.

just map every thing to the same ration & scale .

the block on the right ,ya have the map to skinny ,spread it out will fix it.

you just half to practice at it to get good a lot of you tube tutorials alt to help .

and helps if ya say what mapper ya using 

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The Artist that will fight for decades to conquer their media.
Even if you never know their name ,your know their Art.
Dark Sphere Mage Vengeance