Point out a hurdle for a child who is learning to write English and Arabic simultaneously. Suggest the solution?

Unfortunately, for me, I feel that the only people qualified to answer this question are those that can write English and Arabic! Sorry but I am sadly lacking in the latter discipline!!

a hurdle for a child who is learning to write English and Arabic can be: 

- Differences of letters

- Differences of the composition of the letters (English is single form for each letter, Arabic has conjunction of letters which become different form when use letters in words)

As Mr. Scott, I have no suggestions for this issue.