Name of these stiches

[PinkRaven]

Hi!

 

I would like to know the name of these 2 types of stiches ( the blue and pink one)  and correct me if I'm wrong but I think the black one is a mesh stich.

Also if any of you could guide me to make this shape, it would be very much appreciated ( I can't quite get the hang of it )

 

 

Thank you very much

 

Marie

[Granny Square]

The black looks like h.d.c between, not into, the stitches below.

 

The border appears to be alternating s.c. and slip stitch, the latter in the front loop (from the front of the piece.

 

Sort for the extra periods, my kindle doesn't like crochet stitch abbreviations.