When we moved into our new home, I was so excited to have a space to do arts and crafts. After the birth of our second child, we decided to change my arts and crafts room into a playroom/craftroom. I am so glad that we did, as to be honest a lot of the kids crafting supplies are a lot more fun than mine! I wanted the room to be bright and colourful, so I decided to create a lot of pop art of our photographs of family and friends.
Here's a how to do it...
Open up the image you would like to use in GIMP. I then use a large white paintbrush to remove all of the background of the image.
Then you need to use the Photocopy tool by selecting Filters > Artistic > Photocopy. There is a preview that shows you how dark and thick your lines are going to be, so you can play with the settings until you are happy. If it is still not the desired darkness or your white bits are too dark then go into Colors > Levels and move the little black, grey and white triangles until you are happy with how it looks.
If your lines are dark without gaps you can simply use the bucket fill tool to colour in your image. If however, you have gaps, you will need to click Colors > Colors to Alpha > OK which will create a layer that is transparent apart from the black lines of your image.
You then need to create a white layer by clicking Layer > New Layer and making sure white is selected and clicking OK.
You then need to open up the Layers by clicking Windows > Dockable Dialogs > Layers.
This will bring this box up and you need to make sure it looks like this where the layer with your picture is on the top (you can simply drag them to change the order) and the white layer is on the bottom but selected.
You can then paint onto the page without going over your black lines and once you are happy, you can merge down the layers to create your final image. To do this click on the top layer then click Layer > Merge Down