Now I know you are full of sh*t. Those skinny little legs would not even compete with a TdF pro power-wise. You look like a regular resident of the MUP that I am forced to pass if I have to use a MUP to get somewhere

Ditch the DJ headphones, people like you are what make commuting and traveling on any MUP a pain in the ass. You are on the bike to ride, not blare OONTZ-OONTZ-OONTZ into your head. You can wear an earbud in one ear if you must have music, but be aware that it does reduce your awareness of your surroundings. Wearing DJ headphones would just cut you off completely, which is unsafe for both you, and those around you.

Pick up a helmet post-haste, unless you wish to be dead or a vegetable. Try to remove the tin-foil hat and recognize that all helmets are designed with safety in mind, and all that separates cheap from expensive is looks, number of vents, and better ratcheting system to tighten the helmet to your head so that it is securely and properly affixed to your head. If you wear it loose, then expect the same trauma you would get from a crash as if you weren't even wearing one.

Saddle is irrelevant, use what works.

If you are serious about improvement, start with acquiring clipless pedals and appropriate shoes. You lose a lot of power when you can only use half of the pedalstroke to apply power. Also consider that serious cyclists wear lycra shorts and cycling jerseys for a reason. They are comfortable, don't flap about in the breeze, wick sweat away from your body, and jerseys have carrying capacity for any number of small things that cyclists typically carry on a ride. Some people manage with out, but I feel that it is their loss. You don't need to be a poseur in team kit. Performance Bikes carries plenty of plain and functional cycling kit.