Use whatever image hosting service you like and post the link to /r/woodworking. The key here is it needs to be apparent that you've built the entry, and you follow the photo requirements listed in the contest rules. Submissions of finished photos only will not be accepted for entry. <-- I can't emphasize this enough, you absolutely need more than 2-3 photos for a valid submission. I will no longer accept entries that have albums that go from rough stock to 90% complete in one jump.
Not long ago, I needed to make some angled wood parts to build a new soffit on my garage. I didn’t have the customary tool for the job, but I had some steel joining plates. I screwed through one of the holes in the plate, set my angle, then added another screw to lock the angle. I could then use it as a template to mark all the pieces at the same angle and cut them with my circular saw. — Ryan Bartsch
Lacking a jointer? Use reader Court Kites’ awesome tip to create perfectly matched glue joints on wavy or bowed board edges. Lay the boards on a flat surface, then clamp them across the middle with a bar clamp. Lay two 8-in. long by 1-3/4 in. wide scrap boards across each end and screw them in with four 1-1/4 in. long screws, two per board. Keep the screws well away from your future cutting line!
Despite the abundance of plastics, metals, and other materials, wood products continue to be an important part of our daily lives. Woodworkers make wood products from lumber and synthetic wood materials. Many of these products, including most furniture, kitchen cabinets, and musical instruments, are mass produced. Other products are custom made from architectural designs and drawings.
Sanding the inside of a hole or curved surface can be difficult. To simplify that task, insert a 1/4 x 3-in. bolt into the pilot hole of a hole-saw cutout. Secure the bolt with a washer and nut. Using a hacksaw, cut a 1/4-in. deep slot in line with the bolt. Cut a piece of adhesive-backed sandpaper so that you can slide one end into the slot, wrap it around the cutout, and slide the other end back into the slot. Chuck the bolt into a drill, and you now have a homemade drum sander. — E.R. Comstock. How to Sand Wood Faster

Historically, woodworkers relied upon the woods native to their region, until transportation and trade innovations made more exotic woods available to the craftsman. Woods are typically sorted into three basic types: hardwoods typified by tight grain and derived from broadleaf trees, softwoods from coniferous trees, and man-made materials such as plywood and MDF.
Cutting sandpaper is a quick way to dull your scissors or utility knife blade. Instead, I fastened a hacksaw blade to the edge of my workbench. I slipped a washer behind the blade at each of the mounting holes so a sheet of sandpaper to easily slides in behind the blade. I fold the paper where I want to cut, just as a reference. — Kim Boley. Try some of these storage solutions!
Commonly used woodworking tools included axes, adzes, chisels, pull saws, and bow drills. Mortise and tenon joints are attested from the earliest Predynastic period. These joints were strengthened using pegs, dowels and leather or cord lashings. Animal glue came to be used only in the New Kingdom period.[3] Ancient Egyptians invented the art of veneering and used varnishes for finishing, though the composition of these varnishes is unknown. Although different native acacias were used, as was the wood from the local sycamore and tamarisk trees, deforestation in the Nile valley resulted in the need for the importation of wood, notably cedar, but also Aleppo pine, boxwood and oak, starting from the Second Dynasty.[4]