This word wall is something we have always done and found helpful. You can make a word wall as decorated as you would like but for my kids I found simple was better for them. To hang all words up I used velcro dots found at my local dollar tree, they did not take off any paint but if you are worried about that you can try double sided tape. I really like the velcro because kids can remove words as needed, if you like to play games with the words it makes it easier to do so. Another idea is making two different parts to a word wall. You can do a section for words they know and words they still need to work on. All in all after 3 years I have found it very helpful to have the words hanging up for kids to see and study. Feel free to try it out and let me know how it helps your child!