You will need a lino cutting tool, I use one made by Speedball, it comes with a selection of different sized cutting blades. You will also need some erasers, here are a few that I managed to find in my local shops....
You can see my very rough sketching and the pale lines where I've started carving the outline. Once you have carved a groove all the way around your shape you can change to a wider blade and start to cut away the background. Start from the groove and work outwards. If you start from the outer edge of the eraser and work in towards the shape, you risk accidentally cutting into your image. Continue until the image appears to be raised from the background. You may then wish to change back to the narrow 'v' blade to add in some fine detail, such as the veins on a leaf. You can take a test print at anytime during the carving process, just use a water based ink pad such Distress Ink, which you can easily wipe off without removing your design.
Shaped erasers, such as the flower shaped ones pictured below are great as they need very little carving to give great results.
Here are a couple more prints which I think will make lovely backgrounds for cards, I've printed these two with black Archival ink over a Distress sprayed background.
If you think this is something you'd like to try and have any questions, please feel free to leave a comment and I'll do my best to answer any queries. I've got a spare pack of four square erasers, the same as the ones pictured above with 'RSPCA' printed on, which I'd love to give to one lucky person who leaves a comment on this post. I'll choose someone at random on the eve of our next inspirational post. In the meantime, happy crafting !