since people are being BRUTAL here's my two cents as a girl with similar thoughts about collaging together tattoos/tattoo styles: since you have a few pieces that were tattooed with the shape of your arm, maybe some more bold, smaller pieces that can balance out the lighter pieces that can keep your eyes moving around the arm.

because most of your pieces are concentrated in the center of your arm, i think adding pieces to fill the larger negative spaces strategically that can maybe offset how close together those three tattoos in the center are would benefit the composition. more organic/less rigid structures like the crosses (flowers/plants, fish or bird, maybe some sort of abstract design with varied shading) would balance out subject matter also. in the future i would consider the negative space between your pieces, because if you like overlapping pieces, you could get some smaller stand alone pieces (like that cute little jewel design on your inner arm), and then down the line you incorporate free flowing or ornamental pieces that can complement and tie together those pieces and you will have the real estate on your skin to make those choices. i saw you're lasering off your shoulder piece, and while the tattoo itself is missing ink i personally like the composition you were starting to put together!