I don't remember the details, but I think I based this one from a sketch. Yeah, I didn't use any loras, I just edited them manually. Unfortunately, I couldn't get their colour right, and AI tends to change the colour too much, while getting the right color in Photoshop isn't as easy as it may seem 😢.
I didn't draw the cutiemarks myself, just photobashed them, and it's rather easy to do =)