New to this! Please help if you can :)

Hello, 

I am currently trying to make something that is a cross between the following two websites

http://www.panzoid.com/tools/backgrounder.aspx

https://www.canva.com/

I copied the coding from panzoid and tried to edit it in dreamweaver but i think it will work as the actual coding required for a tool like this to 

work has to be server side? 

I think im way out of my league here but could someone tell me how can i edit the graphics and generally move a few things around

(In which software) I sort of assumed it had to be done in Visual Studio? If anyone could tell me a little more on how i should go about

this id be greatful!

Thanks!