Timmie...it looks like you are trying to solder too many components at one time. Try installing just the valuers in each bag, soldering them on the top just enough to hold them when you flip the board, solder those out, trim, then repeat. I have better luck going hot and fast and you can't do that with leads blocking the ideal angle and being able to contact the iron and trace at the correct angle. If you've had the iron contact the lead for more than 3 or so seconds, back off and let it cool and go again. When the iron is not melting solder it is cooking off the flux that makes the joint flow nicely, so between each soldering of the installed components, when ready to solder the new batch, coat the tip with a wee biut of solder AFTER wiping the iron on a damp sponge. That cleans the flux residue off the iron which deposits that black residue you see. Soldering is not voodoo, but does require some practice and applying the correct technique to begin with. Before i did any electronic work my dad showed me how to solder wires on automotive repairs and man, did i do a lot of that in the oilfield. There really is no substitute for experience in soldering....ya gotta put in the hours, but not as many here, as opposed to trying to figure things out on your own.
I believe that's what these online forums can and should do....eliminate those things that DO NOT WORK, HAVE NEVER WORKED and NEVER WILL WORK....based on the cumulative knowledge base on this forum....we got your back bud..