so basically to make your own layout, this is a complicated process.
First of all i would recommend you to get some knowledge about html (which is a prgrammation language) and css (which is another one).
Then you would have to watch some ytb videos about how to add and modify things on your spacehey profile.
You can also look out some blogs also on spacehey, a lot of experienced programmers are giving advice and tuts about this subject.
If you wanna know more or need help, don't hesitate to contact me !! :333
have fun making your layout !