User blog comment:CureInfinity1/Where can I create my own Precure pictures?/@comment-25648652-20150106092450

For freeware (actuallu not freeware, only people in the internet share it free), maybe you can try Paint Tool SAI. I have the link but i don't know if it still works.

http://www.mediafire.com/download/po4g8ir9g8dg3o9/Paint+Tool+SAI+Anglicised+with+Custom+Brushes+and+Transparency+Mod.zip