When you select a pencil tool, you can also select a type of cross stitch.
A type of stitch
(1) Cross Stitch
(2) Three Quarter
(3) Half Cross
(4) Quarter Stitch
(5) Petite Cross Stitch
To draw the half stitches, chose the type of stitch from the toolbar, and then click on the corner of the square.
Real view:
(1) Three Quarter
(2) Half Cross
(3) Petite Cross Stitch
(4) Quarter Stitch