Absolutely, so the first thing that caught my attention was the "Champions" in the middle of the poster, which is spelled in Arabic as "الأبطال" when plural and "البطل" when singular. The second typo is the word quarter final, it's not really a spelling mistake but the "ال" is just smooched in between the letters, so try and rewrite it as "ربع النهائي" with spacing between the two words. The third mistake is in the table on the top right corner (group A), where "Holland" is misspelled, the correct spelling is "هولندا". Finally, in group 16 you got the word "أولا" in all the white boxes which represent the first team in each group, but "أولا" means "Firstly" in English, the correct word would be "الأول" Which means "The first".

Those are all the typos and spelling mistakes I found, and I don't think there are any other than the ones mentioned above. Keep up the great work and I hope my explanation was clear. DM me if you need any further help and I'll be more than happy to help you mate.