This is pdf file with sequence photos for Mega Bloks Build 'n Learn ABC Spell.
Although you need to have the Mega Bloks Build 'n Learn ABC Spell
to use this in a more efficient way , it could also serve as inspiration for a similar activity
I would suggest print those on photo paper and cut the pictures and put a small photo album or on a strip of paper so the child can see the sequence.
Sequence cards are great for children with special needs to learn how to follow instructions and is not overwhelming to them as the task is broken down.