It’s actually quite easy to blend images together. I use ArcSoft PhotoStudio 5 which I got free with a digital camera. You can also use GIMP which is an open source image editor.It is something you can search for on YouTube and find your preferred photo editor. Our school laptops come with Photoshop and even though it looks hard , it really is straight forward. Sometimes I splash a bit of extra colour into certain areas of the image with the paint bucket tool. You pick the tool , the colour and click on an area of the image. If you don’t like what you have done, you simply use the undo button.