Sorry this has taken so long.
Now that you have squares done, put them in the order you want.Then it is back to pressing seams!
Then you sew the squares together in a row.
Then you press and pin and sew all the rows together. After that press and pin and sew even more until all the rows are together into one big quilt top:
All that's left is picking out batting and a back, then tying the quilt and finishing it off.