Also,I noticed that your art style has greatly improved since the first drawing you uploaded.
If you have no desire to switch to something other than ms paint,then I strongly suggest you settle for using the art style you used in this pic for now
This is by far your best drawing (also pinkie looks really good in this one)
Also to ease up on drawings that include mud. I know that it is your fetish but it isn't really that popular (like several other fetishes) on this website and is bound to get you negative reactions ; so it shouldn't be the main focus of your drawings if you want positive feedback and scores.