I'm not the best artist in the world. I know that.  My Essential Tremors make sure of that.  I do the occasional sketch in my school note binders, but nothing really interesting.

I mostly do recolors and splices of existing pictures.  Most of the pictures I make of my Pony OC are Rainbow Dash recolors with lengthened hair and added accessories.  I see no reason in uploading those pictures because they are not completely original.  There are some who have apparently been fooled otherwise, but if they were to ask I would tell them that they aren't truly.  The character is orginal, not really the pictures.

Should the urge ever hit me, I may digitize those notebook sketches that actually seem worth the effort.  One of which is what I would envision to be an air elemental. Though it may have bits a pieces that have at some point been seen elsewhere, at least the drawing is original.

TL;DR:  Recolors aren't original.  Recolors with modifications are somewhat original.  Original works are original.