Help with rounded corner doorway

[BasseBoi]

I started to skechts on a house, and i wanted a rounded doorway. Then i realized that i dont knnow how to make that.
I just uploaded a picture of the doorway.
I want it to be 3 pixels wide, but i have a problem to keep the round form when it starts to bend 
I would love if somone uploaded a reference or redraw it

[TRUEvector]

Actually you've done rather well. Need some more practice with so called "jaggies", but you should know that some strange forms and shapes are inevitable while pixelating.
I try to fix it a little bit, hope it will help.

[BasseBoi]

Thank you, i knew it didnt know MUCH change, but somthing was of. Thank you i will look out for jaggies next time