Door Frame in 7 steps!

(1)
measure the sises of your existing door (length+width)

(2)
Draw your door on a piece of thick card board about 3 or 2 mm thick

(3)
on a piece of paper draw the model you will like to have and split the layer s up.

(4)
Draw the bottom layer around your door ,then 2nd then 3rd etc.

(5)
cut each one out so together it will come to make your model like in the first picture


(6)
Next stick them all together and you have a door way

(7)
this is how i made all my doors also along with windows + window frames!