Hi Postoev - thank you for submitting your designs!
#3 - I like the font and color of the text in this one. Try a line art drawing of broken in Doc Marten Boots above it, instead of the current art above the words. I will upload some images of boots for all designers to reference
#4 - I like the font and text in this one, as well! I would prefer a softer color rather than the mustard/gold color selected. Again, rather than the lens abstract image, try a line art drawing of boots or another symbol instead.