Yes, the pictures come up fine. It would be better if the porch roof was 2-3 inches lower, but that may be out of the question. The continuous crack in the sealant that you see in the picture below really needs to be taped. Elastomeric painted over this crack may last a year or so before it cracks again. This is fixed by using seam tape over that crack/transition area. The roof seam tape they sell at the home stores is too stiff to work on this combination of corrugations and flat main coach roof. I would recommend using a spun fabric tape rather than a woven fabric or that screen type tape. I would recommend using Eternabond Web Seal [ http://www.eternabond.com/WebSeal-p/cr-wb.htm
] in a 6" width. 4" might work too, but you will need to get it pressed in to all voids real well. 4" might want to lift off of the corrugated because there won't be enough of the tape on the corrugated panel. The 6" x 50' roll is about $100. The 4" is about $65
The way the stuff would be applied is the entire edge is cleaned thoroughly. Remove any loose or peeling old sealants. Do your final last pass of cleaning with lacquer thinner. Be careful, very flammable stuff. This will make the old sealant area very tacky and help the seam tape to stick better. The seam tape as I mentioned is a spun fabric, which makes it able to stretch in any direction and is pliable enough to form fit into the two different metal patterns. This seam tape is waterproof in itself, but not UV resistant. The fabric is there to accept the elastomeric coating of your choice. The better the coating, the longer it lasts. The Henry's Elastomeric is only OK, not great. I think Home Depot sells Kool Seal, at least they used to. This may be a better product. I use Ames Research Maximum Stretch [ http://www.amesresearch.com/roof_coatings.htm#mx
] This product is generally an ordered product, but it available at some retail outlets. Check with Ames to see if there is a store near you.
Which ever product you use will work fine with the seam tape. The seam tape will bridge that crack area and keep the new sealant from cracking prematurely. I would put on at least 3 coats of sealant over the tape and about an inch past the tape on each side. You don't want to do "light" coats, but you don't want the product to puddle either.
If you wanted to do the best job possible, you could add an additional step between the cleaning and installing of the peel n stick tape. Ames research makes a trowelable caulk that you can apply with a putty knife. you could use this product to fill in the edge of the corrugated metal with a tapered slope rather than an abrupt and uneven edge. This would allow the seam tape and coatings to install better and last longer.
Hope this helps.