I believe you may be trying to transfer your pattern while the leather is either too wet or not cased. Are you casing your leather first?
If you need some instruction on casing there are quite a few discussions for that on this board. Be careful when you trace the pattern. Use a small rounded
stylus and move your hand in easy, even strokes. when you do your cutting with the swivel knife, follow your lines very closely.
Unfortunately, you need more than one background stamp as in, different shapes for instance.
You are allowing your stamp to cross the cut lines into another part of your design. Look at the edges, see where you crossed over. Some places you actually didn't stamp the entire background space.
The pointed backgrounder you have is great for getting the pattern into pointed areas but it does not do a good job in larger spaces. You need a rectangular backgrounder for the larger areas.
Don't "over stamp" your design. I mean you have too many impressions of your mule foot and veiner. Sometimes it looks much better if you don't get too carried away. On the left hand side of your image, you have used a pear shader twice on the pattern that should not be there.
The same info applies to any and all of your stamps. Use some scrap leather to practice a design, just a small area is good. Practice holding the stamps vertically and don't squeeze them so hard that your fingers get stiff. Relax! Use good lighting.
One more thing: Don't force yourself to do major projects until you have more stamping tools and experience. Practice, practice, practice. You never have enough. I am sure many professional leather crafters will tell you they practice before doing a large new project especially when there are new techniques to be used.
There are many folks here to help you with more technical experience than I have, do not hesitate to ask questions.
ferg