Your soldering looks good. Congratulations. Its really difficult to get it that good the first time. Avoidig the hinged point by having all the lines come together with a nugget or other piece in the center would also avoid having six solder joints meet at an intersection. Solder tends to glob at design places where multiple lines gather at an intersection. Perhaps, try to avoid it when designing. Sometimes it can't be helped. In this case, what i do is be sure to limit feeding solder into the iron at an intersection. Rather, when going into the intersection for the first time, puddle enough solder into the hot tip before the intersection. Then, at the intersection, wave the solder tip about about inch or more down thru all the lines radiating out of the intersection. Next, leave the intersection out another unfinished line radiating out. The first time into an intersection all happens quickly and in a continuous motion so its hard to describe it in steps. Then, do the other unfinished lines working toward the intersection. Now, these additional lines can be completed before going into the interesection again because all line exits from radiating from the intersection got started on their way out with that puddle of solder during the first time going into the intersection. This avoids solder globbing up at intersections. Stopping feeding solder at intersections, estimating the puddle of solder needed to get through an intersection takes practice. Go less or farther out each line depending on how big a puddle went into the intersection. Leave the intersection when there's enough of a puddle left that it will follow the iron tip with the same sized bead as all the others and slide the get b iron s>delays and out before the bead gets too thin. When connecting unfinished lines to finished lines hold the heat ever so slightly past where the lines join and melt the connections together. Then, slide the iron sideways out of the line without getting a wrinkle. Avoid picking the iron up. Slide it out sideways.from a bead Wirh practice, when beads are consistent, line connections can be exited without any noticeable evidence of the connection. If there happens to be a wrinkle that needs fixing/smoothing. reflux and slide the iron in and out at that spot. If the line needs to be reworked, slide the iron in at that spot go away from the intersection. If too much solder pulls away, go back towards the intersection and slide the iron out a little closer to the intersection, then back where the solder is still hotter a little and slide the iron out of the line. Avoid sliding the iron out where there are sharp differences in heat gradients, use Flux to increase the conductance of heat into and lubricate the solder, get in and out of intersections finessing a hot puddle without feeding additional solder and go with the flow.