You are all able to write neatly and form letters correctly but it's hard to write neatly when you are busy thinking about what to write. The more you practise the more your writing will flow without having to think about it.
The sheets provided give you words that are on the Year 5 and 6 spelling list. You can print the sheets and write on them or you can just copy the words into your homework books.
You should write sentences containing the words too.
If you practise regularly your handwriting and spelling should improve quickly.