Overlooked something:

My family is big very big.

or My family is big -- very big.  (for emphasis)

My family is big very big. I have ten brothers and sisters. My mother married two times. (1) so it stay so big It (2) was very good when I (2) was small because did have very children there were many children around for to (3) play soccer, basketball, and volleyball, (4) but my mother was very worried. (5)

1.  I crossed out the second half of this sentence because it is redundant.

2.  Missing subject.

3.  to + verb

4.  When listing things, separate with commas, and write "and" before the last item.

5.  This last sentence is incomplete.  Why was your mother worried?  

Good work :)