Fill a bag or sack with concrete and tie off the top. Then wrap String around to form the look of a pumpkin. Leave it to dry (possibly a week) Unwrap the parcel and paint the pumpkin. Have fun.
Hi! Maybe this will help
I’ve seen people buy the cheap plastic pumpkins that children use for trick or treat as a form. Pour ready mix inside and let set. It will take quite a while because it’s dense.
Here's a video to show you the process. Have fun!
and some more info from previous Hometalk posts:
I love this one from an old candy bucket! https://www.hometalk.com/10102300/concrete-pumpkin-project
Here's a fun one from here one Hometalk! https://www.hometalk.com/4765691/diy-concrete-pumpkin-planter-candy-buckets
This may help: https://www.lilyardor.com/concrete-pumpkin-diy/
Here are some ideas: https://www.hometalk.com/search/posts?filter=concrete%20pumpkin
The easy way to make them is blow up a balloon put 6 rubber bands around it fill with cement squash it down like a pumpkin let dry then when dry break baloon
Lots of ideas here:
Here's a video that might help = https://www.youtube.com/watch?v=ad55aNeZPwU
check that pin https://www.pinterest.com/pin/235453886757791881/
Here are all kinds of concrete pumpkin ideas from right there on Hometalk: https://www.hometalk.com/search/all?filter=concrete%20pumpkins