Letter mat for Letters and Sounds SEN

I am finding my group are struggling to write down a sound when I say it. They just can't remember what it looks like or how to form the letter. I just made this very simple mat which I am going to laminate and use every day as part of quickwrite. I will say the sound and the child will find it on their mat and write it. I am hoping with lots of practise they will be able to do it soon without the mat. It covers all the letters from phase 2. I haven't done ck, ff, ll or ss.