There are alot of people new to modding in 2K19 so here's a quick tutorial on changing lengths the body and arms and the shoulder widths.
Open png file with 7zip then drag the "appearance info.RDAT" to desktop
Edit the "Appearance info.RDAT" with Notepad++
For shoulder width look for "rightArm.ty":and "leftArm.ty" - Change both to same number
*****Make sure there's always a (,) after your number Example (17.00000000000,)******
For arm length look for "rightHand.ty": and "leftHand.ty" - Change both to same number
For short arms use (26.0,) and for very long arms (29.0,) but you can adjust to your liking
For body length look for "spine2.ty":
Decreasing the number shortens the torso and lengthens the legs. Increasing the number lengthens the torso and shortens the legs
For neck length look for "head.ty":
Increasing or decreasing the values will change the neck length
Hit file then save. I then delete the the old "Appearance info.RDAT" from the open 7zip then drag the edited "Appearance info.RDAT" from desktop to open 7zip
Copy the edited png file into you modded folder and you changes should appear when you go to edit player.
****Bonus**** For players that have cut their hair off go to the bottom of the Rdat and where it say "has hair" change the answer to false and it will remove the hair.
If you don't know how to get this step to even begin to do all of these steps you should probably go to below link of the 2k18 tutorial post done by TGsoGood and start reading and watching the informative videos. It would also be wise to actually follow TGsoGood (thegoods) on youtube because he has tons of videos that explain modding.
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