Is that wood shed your radio shack? Pretty low starting point as far as the first attachment to a structure. I always use the peak of the house or a sturdy chimney to gain as much height as I can before guying. Luckily, I have a great tall chimney on the back of the house and get 30 feet out of that before I have to guy. Another 30 feet is no problem and the neighbors don't have to look at an ugly tower, which can be a magnet for complaints. You have a good start on an antenna farm for antennas that don't need much height, though.
What you might do later on is get two more sections of even larger diameter metal poles, some heavier gauge guy wire, some concrete to anchor the base pole and get that antenna up about 50 feet. You can attach some sloping dipoles as extra guys for a bonus!