BLOCK or BUBBLE lettering.
CHISELED (bevilled) LETTERS
-Bubbles would be best reproduced with bubble lettering.
-Letters would need to be on a colored paper to show highlighted edges.
-Color saturation would be strong around edges of letters, and lighter in the middle (value)
-Highlights and colors would need to flow in the direction of the outer contour.
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Glitch
Neon Sign
In the signage industry, neon signs are electric signs lighted by long luminous gas-discharge tubes that contain rarefied neon or other gases.
NEON SIGN CRITERIA
-Use Mid tone to Dark paper
-Lettering can be connected and thin (like a tube). The tube bends, so it cannot be sharp on the edges.
-The center of tube is the lightest area (white)
-The outside of tube is more saturated in the color.
-Around the tube (on background) is a light glow of the color (use value) .
Metallic Mylar Balloons
-scrunch lines on the inside/bends of letter (angling inward)
-usually highlight in center/top of letters.
-usually shadows at bottoms of letters.
(this will change depending on the lighting and perspective).
-has 3-4 tints/shades of balloon color
(example- a sliver balloon would have white, greys, and black)
It will help to use visual references: Click Here or Here