Oh wow, how do you get such excellent texture with a ball-point pen? It's amaaaaaazing! (Also, HI AND WELCOME TO THE FORUMS, SHIPPER FRIEND)
HELLO TO YOU TOO, and thanks, both for the welcome and the compliments on my drawing c:
As for the texture, I'm not really sure? I just draw, and then whatever happens happens... Well, I guess I simply use varying pressure when I draw. If you draw very lightly with a ball point pen you can get some interesting textures, and it's actually pretty great for shading too! I've had to learn the hard way, though, that every pen is slightly different, so the best advice I can give is to get to know the tool you're working with