Nice! Welcome to the forum.
To give some advice, you might tell us, for what purpose the map will be.
Just for fun? Picture for the entrance hall of your grand mother? For a game? A novel?
Are you planning to paint it completely on paper or are you using software to get the finishing touches?
Do you work with a tablet? Will this be a colour map or only black and white?
Generally, I would suggest to draw it a little bigger to get more quality to detail, and with a pencil that is sharpened.
Pay a lot of attention to typography. Add a wind rose and scale. Fit it better to format. Add a borderline.
If you want to have a more realistic style:
The river could be more curved, running through hillside terrain.
The montains could be more different in size and shape.