I've got to agree with the above. Try and find another spot because those glass panels are not light and easy to move about!
But, if you can't do that here's a plumbers tip for silicone. Get a spray bottle with metholated spirits in it ready and a few paddle pop sticks. When you do your silicone inside edges,use the paddle pop stick to wipe away the excess. You will get a nice uniform concave profile for the silicone that way. Then give it a light mist with the metho and wipe your finger lightly along the bead to finish the seal. This is the neatest way I've found to do any silicone work and trust me, we do a lot!
But, if you can't do that here's a plumbers tip for silicone. Get a spray bottle with metholated spirits in it ready and a few paddle pop sticks. When you do your silicone inside edges,use the paddle pop stick to wipe away the excess. You will get a nice uniform concave profile for the silicone that way. Then give it a light mist with the metho and wipe your finger lightly along the bead to finish the seal. This is the neatest way I've found to do any silicone work and trust me, we do a lot!