If it helps anything to the people who make vs/battle sprites from scratch, start out (if possible) by making a sketch of how you want a Vs/battle sprite to look like. If you're working with vs sprites, resize it to make it fit in an 80x80 canvas, and for vs sprites make it fit in a canvas which has a heigh of 64 pixels (i think??)
It really helps up setting things up for your edit/selfmade sprite and it'll make lining things much easier, as well as fixing mistakes. Of course, if you're going to do this approach, make sure it's in a program that supports working on layers! i.e. photoshop (when zooming in it shows a pixel grid) and paint tool sai (i use this but it doesn't have a grid system so i wouldn't recommend it if you're a beginner)
Good luck!