Step 1: Everything You Need
Lint or string
Chalk (to draw on the felt with)
Step 2: Measure and Cut
Fold the felt around the laptop, approx. 2,5x the depth. My felt was a bit shorter, this way I could make 2 projects :)
Mark the felt with the chalk and cut.
The width of the laptop needs a bit of extra wiggle room. In the second picture I added 1cm. This was enough for this very thin laptop. My sewing machine took qof 0,5cm while sewing. The total in cm is marked and cut. Use at least 2 meauring points for this.
Use the liner to check if every edge is straight.
Especially if the felt wasn't machine cut for you. The edge in picture 7 needed some extra love. With the end of the liner in the corner it is easier to mark a straight line and 90° corner.
Cut on the inside or outside of the line, not in the middle. This way your edges will be straight.
Step 3: Prepare for Sewing
If you want your inside edge to have a finished look, wait with the binderclips and sew that edge first.
Step 4: Put That Machine to Work
If you have multiple stitching options on your machine, choose a thicker stitch. Picture 4 shows the difference between a regular stitch and the one I chose. Picture 5 shows the pictogram of the chosen stitch on my sewing machine.
Step 5: Finishing Touches
Measure where you want your buttons, mark and sew them on. Using a thick or double thread makes this a lot easier and faster.
Tie the ribbon or string on the upper button. Wind it around both and you're done! :D