this was requested, but I forgot by who (I suck at remembering things) but I thought it was a cool little/easy idea you could do for a theme, but any-hoot, this is how you do it.
Superimpose
i. Open either a background image of your choice or one at the end of this chapter as the background in Superimpose. Upload your PNG as the foreground and merge it onto the image. Save it and open it in Phonto.
ii. The original cover I based this off of had toggled lettering, and I wasn't sure if there's a font you can get that will do that, but the way I did it worked as well. You have to type in one letter at a time and tilt it a little until you get your whole title arranged. Save it and then open it back in Superimpose.
iii. If your title overlaps your person, this is how you erase it to where it looks nicer. Upload the original saved image you made before you put the title on it as the background and the one with the title as the foreground. Use the eraser to erase the letters and then save it. You're done!
For Pics Art, I'm pretty sure you can just add the PNG in there, then do the title, and then do the same process as the above steps, but I'd rather not take screenshots and stuff for it because tbh I think it's kind of self explanatory if you know Pics Art pretty well.
Here's a few templates I made real quick; you can literally make your own as well too, guys. I got these off of @ahpps and @textureroses on instagram and it was so easy to make these backgrounds. I hope you like them and don't forget to punch that star in the corner there!