Below is the tutorial to do it simply:

1. Take your square of Japanese paper, white side towards you. Mark (fold and unfold) a central vertical crease, then fold both sides along the line marked by the crease.
2. You get this.
3. Mark (fold and unfold) a horizontal center crease, then fold the top and bottom along the line marked by the crease.
   
   
   
   
4. You get this.
5. Open and fold the figure outwards along the indicated lines (about 1cm apart)...
6. ...to get this.
   
   
7. Take the bottom left corner of the figure and open slightly as in the picture...
8. ...and flatten to get this.
   
   
9. Repeat steps 7 and 8 on all four corners of the figure to achieve this.
10. Fold the figure in 2 as shown.
11. Mark (fold and unfold) the top right corner along the indicated line.
    
    
    
    
12. Slightly separate the two sides of the house...
13. ...and fold the indicated part inwards, using the fold marked in step 11.
    
    
14. You get this. Repeat steps 11 through 13 on the left side of the figure.
15. TADA! The little house is finished!

This origami house can be glued to a white flap writing card. It can be decorated and become, for example, an invitation card to celebrate a new address, or simply represent "your house" to send good wishes for a peaceful return to school.

I wanted to paint flowers with gouache and then I told myself that using ink pads could give a very nice result more quickly. But it all depends on whether there are a lot to do: The unique painting piece... or the small series, with the stamp!

Adeline.