cotton in the colours you like and a hook number 5

Begin with the colour you like.
Ch 22 and work two squares with TSS (Tunisian Simple Stitch). 

Trimming:
pick up a loo through the border of the square and work Tss with 4 loops, joining the squares!
Have a look, please. 
Corner:
Begin to crochet the corner in the next but last loop before the corner
I made 2 rows  - a & b - in the same loop. 
Remember: all the corner-rows begin with a ch on the right side!
a) 3 Tss, 1 ch through the main piece (here green), 
Backrow: 1 ch (as in photo), then y through 2 loops as usual
b) 3 Tss, 1 ch through the main piece, but go through the first loop on the hook  (e.g. without making an extra.

In the corner-stitch I repeated row b three times and the the first stitch an the next side I made b & a.

Hanger:
Make a basic row with about 10-12 loops.

Bud:
ch 7 and make a BR.
On all the next rows make one TSS less, and go on until you have only one stitch.

Stem:
ch 12, turn and make a BR.
Where you finish add a leaf making a new BR with 7 ch.

Leaf:
make a BR with 8 stitches, and where you finish: do what you never did before with TC! That means turn and work 5 stitches on the BR, then: going back from left to right: close 2 loops, and then the last 3 loops. 
Cut tread and sew.
Notice that if you make a longer leaf, this last row may be longer, but you must close only the first 2 and the last 3 loops as described above.

Please notice: when you sew the flowers on the squares don't go through the square, but sew in the surface. In this way you'll get a nice and  "clean" backside.

I like to make the leaves in different sizes.