Need some images making? Need some input on software? Get you some here.
Opening statement: I am not necessarily advocating pirated software, just saying that it is out there and readily available >.>
For those of you who are twitchy about things like legality, here are some free image editing software packages:
https://www.gimp.org/ - the classic alternative to photoshop. Much like photoshop itself, you're going to have to take a bit of time to get used to using this if you're new to image creation software
https://www.getpaint.net/ - another useful one. I've not used it myself, but I hear it's pretty user friendly.
https://krita.org/en/ - I just discovered this one recently, so I can't say much about using it. It seems like a very good photoshop alternative though, and I'm impressed with what I have seen.