Gets a bit more complicated now so I will try to alternate a complex one with a slightly easier one for you to try.

Square 9
Open Mesh
Make foundation chain in multiples of 3 plus 2 extra for the turn to make the required size.
1st row (1treble., 3 chain., 1 treble into the 5th chain from your hook, *miss 2 chain (1 treble, 3 chain, 1 treble into next chain., repeat from * ending with 1 treble into the last chain then 3 chain to turn.
2nd Row (1 treble, 3 chain, 1 treble into each of the 3 chain loops of the previous row ending with a treble in the top of the turning chain 3 chain to turn.
Repeat 2nd row for pattern till required length is achieved.

Square 10
Shell Pattern 1
Make a foundation chain in multiples of 6 plus five extra at the end to required length.
1st Row (1 treble 3 chain 1 trebel into 5th chain from hook. * miss 2 chain (1 treble 3 chain 1 treble) into next chain. Repeat from * ending with 1 treble into last chain, 3 chain and turn.
2nd row - *5 treble into 1st chain space, 1 double crochet into next chain space, repeat from * ending with 1 treble into turning chain, 3 chain and turn.
3rd Row – *(1 treble, 3 chain, 1 treble) into 1st double crochet, (1 trebel, 3 chain, 1 treble into centre of 5 treble, rep from * ending with 1 treble into turning chain, 3 chain and turn.
4th row - * 1 double crochet into 1st chain space, 5 treble into next chain space, rep from * ending 1 double crochet into top of turning chain, 3 chain and turn.
5th row - * (1 treble, 3chain, 1 treble) into centre of 5 treble ( 1 treble, 3 chain 1 treble) into next double crochet. Repeat from * ending with 1 treble into turning chain. 3 chain and turn.
Repeat rows 2 to 5 for pattern till you reach required size.