Decals
I airbrushed almost all the parts with Gaia Ex-03 Ex-clear (gloss) to prepare the surfaces for decaling and panel lining. For decaling, I used Mr Mark Setter and Mr Mark Softer.

After cutting out a decal and submerged it in water, it took about a minute before the decal came loose from its paper backing. I found that the decals from this kit are quite thick but because of this, the decals were easier to handle and push around with a wet brush without fearing it folding upon itself or tearing apart especially after applying Mr Mark Softer.
After a decal was loosened from its paper backing, I used a small amount of Mr Mark Setter to wet the surface where I wanted to place the decal. Mr Mark Setter helps to soften the decal slightly and hold it to the surface better. On flat glossy surfaces, Mr Mark Setter was optional and I could simply use water instead.
Using the brush, I slid the decal off its paper backing and moved it onto the intended surface. The brush was then used to shift the decal around until it was in proper position. At times, the decal will stick firmly to the surface too fast before I could move it to its correct position. In this case, I wet the decal with water until the decal was able to move around again. Once the decal was in the correct position, I used a small piece of paper towel or brush to dry the decal gently. I also used the brush to push out any air trapped under the decal when it was still wet.
For a decal on round surface, the decal folded along its edges and did not stick down to the surface completely. I used Mr Mark Softer and brushed a THIN layer over the decal, allowing the solution to seep into the folds. I put it aside to let it dry. Mr Mark Softer significantly softened the decal, causing the folds on the decal to settle down onto the surface gradually. As the decals from this kit are rather thick, most of the time I needed to apply Mr Mark Softer two to three times (after each layer was almost dried) over the decals before the folds managed to settle on the surface. I had experience with thinner decals from other manufacturers. They tend to soften and wrinkle up almost immediately upon application of Mr Mark Softer (In fact, care must be taken when applying Mr Mark Softer as the solution is quite strong and can eat into the decals if too much is applied), but I did not see this effect on Tomahawk’s decals.

For this project, I placed the decals on locations as indicated in the instruction manual. The original decals allowed me to customise numbers to my needs. One example is shown in the photo above (D3 as in the name of this project, Destroid March)