I made a pseudo-clone from an Estes Executioner kit. I just added another body tube of the same size as the two that came with the Executioner and it looks close enough to the original that you don't notice from a distance. Oh, and I upgraded to a 29mm motor mount.
I could scan the decal but you are way better off buying it from Tom. I think the decal has a metallic Gold in it and unless you have an Alps printer I don't think it will turn out that great. Besides there is a lot of detail in the decal. But let me know and I will scan it for you. Also this is an easy clone, it is the Maxi Alpha III with a different length body tube. I still see the Maxi Alpha out there for 30 to 50 dollars. The original parts in my Colossus kit are the same red ones that are in the Maxi Alpha. Also here is the link to Estes for their old plans that include the Colossus, sorry no decals or fin patterns. https://www.estesrockets.com/assets/instructions/