Hello. Today I write here how I made this pincushion. You don't need special tool for leather, so please try it. Leather makes your items more gorgeous!
For this, I used the leather of 1mm(0.04inches) thick. If it's too thick, it would be more difficult.
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At first, make two patterns, one for leather piece and the other for fabric.
The fabric one is easy. Draw a circle of 10cm(4 inches) diameter. It includes the allowances.
!!!!! I'm sorry. My first pattern was wrong of the placement of holes. I corrected the pattern. Thank you very much MartiVG !!!!!
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The pattern for leather is this. You'd better to make it with thick paper.
Draw a 6cm(2.5 inches square), and then draw three lines in every 5mm(0.2 inches), from each edge(like the picture).

And make holes at the orange dot points (four points on each corner) with a stiletto or thick needle.

Then, cut leather using the pattern. At first, cut 6cm square. To cut, I used a rotary cutter. You can cut it with cutter knife, or scissors also.
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Then, cut the four corners as the pattern with scissors.
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Put the pattern on the leather piece, and mark as the points what you made.
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Take the leather piece, and hole the marked point with stiletto or thick needle.
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Sew the leather. I used Sashiko thread on the needle. The thread should be strong.
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Make a knot at the end of the thread, and put the needle from the under side, then, go to the next hole like the picture.
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Then, put the needle at the upper hole, and go to like the next hole as the yellow arrow.
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And then, go back to the first hole and pull the thread well.
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Repeat the same route again, pulling the thread well at each hole.
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Sew it three times in total, and make a knot at the end on the wrong side.
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Do the same at all four corners. You finished making the bottom!
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Then, go to the pincushion. Make 10cm diameter circle with your favorite fabric. It's better to make it with cotton or linen. And sew the edge line roughly with running stitch.
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Put stuffing in it and pull the thread. Check if it fits well on the leather bottom, and sew the closure well.
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I put a leather piece on the top.
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Put glue on the leather bottom to put the pincushion on it. I used the glue for leather craft. But I also tried to use the glue for fabrics and it went well.
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Put the pincushion on it and leave for a while. That's all!!!!!
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Enjoy making!
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Thank you very much for reading(* v *)!!!!