outline should precisely match the physical dimensions of the part, which is 7.9 mm wide and 13 mm tall. Use the line , rectangle , or polygon tools to draw the outline of the part as shown in the screenshot

Editor Settings dialog. Something like "Trees - Tall Evergreen" would be appropriate. 11. Click the "Save to Presets" button. 12. Now that you have a "Tall Evergreen" brush safely saved you can experiment